Fuel Fouled Spark Plug

035" gap before installation. Avoid all of this hassle by checking out a top-notch performance spark plug from AutoZone. It’s a good practice to wear insulated gloves. Spark Plugs. Product page for NGK Iridium Spark Plugs Set fitment for the 2009 Lexus ISF. Engine Thermostat. Fuel Injectors. Plug 1 fouled again. It is essential to choose the best cap as it’s going to keep the engine smooth. I have been having the very same problem. It would evaporate out eventually, but if you wanted to start your car in the middle of winter right away, new plugs were required. A spark plug is considered fouled when the insulator nose at the firing tip becomes coated with a foreign substance such as fuel, oil or carbon. I expect that it is tested through the ALDL, but as I said I don't have the proper software. you are running too lean a fuel mixture and/or wrong ignition timing or too hot of spark plug. Without a model number I can only give you general information. Air filter is clean. Fouled propeller. I put a new plug in, started it using the choke, let it idle for about 1 min. Running A/C Delco plugs. Wasnt that. The fact is, dirty, carbon-fouled, misfiring spark plugs will definitely lower a car's fuel economy and replacing them with shiny, new plugs will definitely improve fuel economy. To remove heat from the combustion chamber. can be from bad carboration, spark, carbon, compression, misadjusted gap, just to name a few. Hey my man! i had a similar problem, but a 2003 KX 125, fouled abt 20 spark plugs in the first month of having my bike, they changed the coils and fly wheel. Also you may get fouled plugs and deposits in the exhaust ports and headers. If you find that the plugs become fouled from deposits (a condition known as “carbon fouling”), you might consider a hotter plug. On the other hand, pre-ignition is detrimental to the health of your engine and can cause some serious engine damage. According to consumer needs, we pick some of the top-selling futuristic 1999 nissan maxima spark plugs that are useful and come under budget. The ignition coil is attached to something called a spark plug, which is responsible for forming a high voltage electrical spark that is necessary for igniting the air and fuel mixture of the internal combustion chamber. I took the carburetor apart and cleaned the jets. A fouled spark plug is the spark plug which gathers an excessive amount of carbon around it. Fuel Mileage/Idle Surge/Fouled Plugs. gas is that what you are mixing?. Engine stop switch stuck closed. This is usually caused by two things: Improper fuel level and/or blown power valves. Drain the gas from your lawn mower our outdoor power equipment, then replace with fresh gas and fuel stabilizer to extend the life of your fuel. An injector stuck open; this will make the combustion fail and then you have a lean condition as well; essentially plugs that foul, don't burn the mix and then the O2 sensor reports a lean mix, so the ECU adds even more fuel. Its color, tone, texture, and other visual characteristics are essentially identical to good plugs from the same engine. from your discription you are fuel fouling the plugs, a bad chts will foul plugs, an O2 sensor will cause the engine to run rich but not foul the plugs and you did get the plug wires on right? they go counter clockwise from the #1 tower, a lot of people get them backwards. A worn spark plug not only wastes fuel but also strains the whole ignition system because the expanded gap (due to erosion) requires higher voltages. Fixing a wet plug (from a flooded engine) is easy. INDIANAPOLIS (September 6, 2020) – Funny Car driver Matt Hagan gave Don Schumacher Racing its 350th career win, beating teammate Jack Beckman in the final round of the rain-delayed Lucas Oil NHRA Summernationals, which was completed during final qualifying of Saturday’s DENSO Spark Plugs U. fouled again. Moving to a premium, fine-wire plug reduces fouling, improves engine starts/smoothness, and extends plug life by three to four times. Solution - TX Suddenly Hard to Start, Fouled Plugs & Gas in Oil Just got the Gator back today and here is what the dealer did to solve the problem: - Rebuilt Carb to replace float/needle assembly, - Replaced 2 bad coils, - Replaced bad fuel pump. As for permanent damage, I think the gas motor can be put back in service but it is a messy job. Spark plugs may fail or reduce their output in a number of ways including oil fouling of the plug, carbon buildup, excessive engine temperatures, or general wear of the electrode from high mileage. Fouled spark plugs - If your fuel pump isn't getting enough fuel to the engine, the engine will be running a leaner fuel mixture (lower fuel:air ratio). You can do a compression test yourself with a simple compression gauge. 000126 inches/1,000 miles). The plug is operating too cold to burn off combustion. No more wrong spark plugs. I am not buying the cheapest plugs either. I was running very rich and fouled a plug I put a new one in and it runs for 2 seconds and fouls again same thing happened 3 times. ACCEL has improved the ignitability of the spark plug in a new design! ACCEL has always utilized unique electrode grounding designs to improve combustion and create a larger spark. ) Replace the plug if the electrode is worn, the insulator is cracked, the washer is damaged or the plug head is fouled. I started playing around with the 110 and got it to run. There are some SAE papers that show the spark plug arrangement, combustion chamber design, etc. The entire concept of these plugs were that they wont require servicing for an incredibly long period (this is good for the owner as it translates to lower running cost). Ran a little better for a couple min. The website continues to explain that while carbon fouling can cause problems, if the spark plugs are cleaned, there should. Search for:. Didnt foul plugs on either ratio. Had 5 gallons of fuel in tank and just idling 4 times, 5 minutes at a time. Normal Mechanical Damage. My fuel mixture is fine, its only one cylinder and not the other and not both. A clean un-coated insulator is your only hope of making the spark jump the spark gap and deliver all their energy into the air/fuel mixture. On advice from a big round engine EAA guy at my airport, been adding Decalin Ru-Up (TCP) to my fuel for a year now, and no more clinkers or fouled plugs. New valve cover also. Faster and larger flame kernel puts more of the available fuel to work with less wasted gas, resulting in more power, better fuel efficiency and lower emissions. Carbon Fouled. Engine "loads up" 1. Spark plug gapping: To prevent a reoccurrence, use the right spark plug size. Solution - TX Suddenly Hard to Start, Fouled Plugs & Gas in Oil Just got the Gator back today and here is what the dealer did to solve the problem: - Rebuilt Carb to replace float/needle assembly, - Replaced 2 bad coils, - Replaced bad fuel pump. Another type of fouling is carbon fouling. Only fuel mod is an added fuel gauge, no changes to pump, pick up, or carb. Loss of spark includes anything that prevents coil voltage from jumping the electrode gap at the end of the spark plug. Front Oxygen Sensor(s) n. For example, if a spark plug is fouled with black oily deposits, it indicates presence of oil in the combustion chamber. Oregon Spark Plugs available at OregonPartsStore. Can a bad catalytic converter cause the engine to use more oil? My car is a 2001 Jetta w/2. The little Continentals are famous for fouling their bottom plugs with oil while at idle. Replace it. 3100 psi pressure washer (56 pages) always disconnect the engine spark plug the box. My rhino is fouling out the spark plug in 5 mins. If you feel you may have expired fuel, drain the fuel tank by tilting the unit and fill with new fuel. fuel fouling spark plugs jan 7, 2006 7:55:49 am. Luckily, spark plugs are often cheap and easy to replace. 8 V6 12v spark plugs: Beru Ultra-X UFX7. poor ignition timing 5. What's a good way to diagnose fouled spark plugs? What could be causing them to foul? My 2002 E320 4Matic wagon with 150k mi has been idling rough and finally threw a code for cylinder 2 misfire, in conjunction with notable loss of power. Search for:. If , black and sooty the engine is running too rich in the fuel departement or too cold of spark plug. During normal combustion, most of the fuel oxidizes and changes into carbon dioxide and carbon monoxide gas. The one he pulled out was very wet, dripping wet with fuel, and he said it was fouled to the point it had to be replaced. Car definitely runs great until the plugs foul out. ( In fairness, the plug was recommended by a store clerk as a replacement for the original plug the owner had asked for>) At any rate, changing to the correct plug had the engine starting and running beautifully. Causes of carbon fouling include faulty ignition wires, a weak spark and an air/fuel mixture that is too rich. Why does my spark plug keep fouling up? Earlier this month my bike wouldn't start, I was thinking it was the battery, we recharged it it worked for a couple days, then wouldn't work. This ATV is suppose to be FI however, it is constantly fouling plugs. A Spark Plug is a device for delivering electric current from an ignition system to the combustion chamber of a spark-ignition engine to ignite the compressed fuel/air mixture by an electric spark, while containing combustion pressure within the engine. The effects can range from acceleration misfires, unsustainable max power, and lower than expected gas mileage efficiency. technician B says that a defective spark plug can cause an engine misfire. Its color, tone, texture, and other visual characteristics are essentially identical to good plugs from the same engine. Don't just pull on the wire. Damaged propeller or broken shear pin. it runs good, but like the guy i bought it from said, it fouls plugs. Thanks, Jeffrey. 8 V6 12v spark plugs: Beru Ultra-X UFX7. Plug 1 fouled again. If it's worn, your mower may not run or start at all. SBC 350 with vortec heads. The spark plug should be replaced. Hello, i've done and checked alot in my '06 factory, and I believe I've fixed every problem it had, but one is left - the mixture is too rich and it fouls the plug after some time of working, I've changed three plugs in total, two of them were cpr8e and one was some kind of derin iridium plug, I've reset the tps, the pressure from everywhere is perfect, the thermostat is good, the pipe is bent. Spark plugs are made to take extremes in heat and pressure. If the plugs are in a heat range too cold, they will foul up VERY fast. (Source: Auto Success Online ) All internal combustion engines are air-breathing and deal with an atmospheric pressure of air being forced into the mixture. It runs great for a while then starts blowing smoke and missing. Vintage Musclecar. Can fouled spark plugs be caused by a bad catalytic converter? After only 14,000 miles a set of plugs were bad, one particularly. In many cases, spark plug fouling results from the tetraethyl lead (TEL) in aviation fuel that can be reduced or eliminated by proper operating techniques. That is why a cold engine has trouble starting (without choke). All Bosch fuel injectors released to the aftermarket are OE fit, form and function, and are produced to OE specifications. Severely fouled plugs should be replaced with new Tempest® spark plugs. I even went with a hotter plug which lasted longer but still fouled over time. Changing your spark plug(s) can be an easy task - it just depends on your model of bike and how easy it is to access to spark plug(s). Riders who foul plugs all the time are putting less oil in their gas/oil mix in the belief that the oil is fouling the plugs, and many racers are trying to solve “too rich, too lean” problems. Joined Jan 14, 2016 · 5 Posts. Is your oil. On an older, non computer controlled engine with higher or lower than stock compression, added forced induction, burning of different fuel etc with the plug fuel fouling the an. A: A spark plug is considered fouled when the insulator nose at the firing tip becomes coated with a foreign substance such as fuel, oil or carbon. Is it oil fouling or fuel fouling? The general order of checking, especially if the bike is new to you, would be: Compression test. it could be the idle mixture screw is. When I went to start it a few week ago I noticed black smoke from the front cylinder checked the plugs the were fouled (fuel) with a little carbon deposits. Lack of lubrication Dirt entering engine through cracks in air filter or ducts Engine oil dirty. In this article, we’re just going to discuss heat range. Low compression problems in a specific cylinder and causing its spark plug to become fuel fouled or carbon clogged. Also, when I was running 32:1, there was oil dripping out my exhaust and making a mess. Product page for NGK Iridium Spark Plugs Set fitment for the 2009 Lexus ISF. Nationals at Lucas Oil […]. ) White, no color on spark plug: Too lean. The next thing you will want to do is to check for a fouled spark plug if your ECHO weed eater won’t start. Cross Sell 130-191 Interchangeable with 131-015 Spark Plug Cross Sell 130-191 Interchangeable with 131-015 Spark Plug Upsell 130-191 Included in the 785-509 Engine Maintenance Kit. While plugs should be replaced on a regular maintenance schedule, sometimes you don’t have a new plug handy when you need to use the equipment. spark plug fouled or defective 4. It, in essence, shorts out the spark plug so the energy doesn't jump the spark gap. It was causing the cylinders to misfire. Only fuel mod is an added fuel gauge, no changes to pump, pick up, or carb. It does this by transmitting electrical energy through itself, jumping the gap between the plugs’ firing end, as long the voltage supplied to the plug is high enough. With 215K original owner miles, i’m actually okay with changing the engine out, but having spent big dollars in new fuel injector Spider, new distributor, plugs, wires, O2 sensors, cats, a new computer, all other items listed in this forum — and more, and a huge number of diagnostic labor hours, I’m still concerned this “gremlin” may. I have Dart Iron Eagle Platinum heads 200cc. Q: What causes carbon fouling on my spark plug? A: Carbon fouling is indicated by dry, fluffy, sooty deposits. The spark has to be perfectly timed and the combustion has to take place at a precise moment. The spark plug should be replaced. All Activity; Home ; The forums of P15-D24. The spark plug has two primary functions: To ignite the air/fuel mixture and to remove heat from the combustion chamber. It only wants to run on a very rich fuel mixture. The platinum with 0. Reassemble the spark plug wire and cap. fouled again. Our spark plugs can help turn your rough idle into a smooth ride and help your engine become more fuel efficient. (Source: Auto Success Online ) All internal combustion engines are air-breathing and deal with an atmospheric pressure of air being forced into the mixture. Loss of spark includes anything that prevents coil voltage from jumping the electrode gap at the end of the spark plug. There is no third-party that influences us to choose them or so. I am back with the same old problem. I do not see any ash fouling or deposits, which I have experienced once before when using Techron injector cleaner, but I did use a different brand spark plugs then (Bosch +4 platinum). After my WOT run, p0300 popped up. Start the engine when cold and let it run at idle for 5 – 10 seconds. It idles nice on a rich fuel mixture but as a result it fouls the spark plugs. I just dont understand. Opinion requested - are these oil fouled, carbon fouled, or normal? This car hasn't run in 12 years and had some fuel delivery issues - so I'm leaning toward carbon fouled. Is your oil. Rolling Wrench 32,666 views. The effects can range from acceleration misfires, unsustainable max power, and lower than expected gas mileage efficiency. Spark Plug Condition Chart. and NOTHING else, because according to him, taxiing rich doesnt matter all that much. I seem to trash a good amount of glow plugs when others claim they run the same one for quite a few tanks of fuel. Use your 5/8″ spark plug socket and ratchet to apply gentle counter-clockwise pressure to unscrew the spark plug (remember: righty-tighty, lefty-loosey). Slow jet or air passage clogged or restricted. Upon further investigation, technicians may find cylinder #1 and #7 spark plugs oil fouled and/or the porcelain may be cracked or broken on the combustion chamber side. 6 mm laser reduces required voltage which ensures the consistently stable spark plugs with high durability. Was the gas fresh when you stabilized it? If not I would drain the tank, open the drains on the float bowls and fill it with fresh fuel add the right amount of stabilizer to it and put a fresh set of plugs in it. incorrect fuel mixture (too rich or too lean) 3. Place the spark plug into the wire holder. They can also leak or drip pressurized fuel. The first is obvious, to create the spark necessary to ignite the air/fuel mixture in the cylinder. I do have a replacement coil I could install but then stock one seems fine as once you swap out the plug the thing starts, runs and idles like a charm. Spark plugs transmit electrical energy that turns fuel into working energy. 03: QL77JC4: Spark Plug QL16V *155 Commercial (90 degree CV) 1989-1992: Surface Gap: QL16V. What to Look For. HEI ignition. Vintage Musclecar. they said there were no codes in the ECM. It idles nice on a rich fuel mixture but as a result it fouls the spark plugs. plugs get fuel fouled. If i clean the plugs and put them in and crank it for a little bit then pull the plugs back out they are fouled with fuel. Blisters on the insulator tip, melted electrodes, or white deposits are signs of a burned spark plug that is running too hot. NGK Spark Plugs Choose an option CR9EKB LKAR8A-9 BR7EiX BPR7EiX BR8EiX BR9EiX LMAR9AI-8 LKAR8AI-9 BR7EiX-4 pack BPR7EiX-4 pack BR8EiX-4 pack BR9EiX-4 pack LMAR9AI-10 LKAR9BI-10 LMAR7DI-10 Clear Iridium & Standard Spark Plugs for KTM, Husaberg, Husqvarna by NGK quantity. All the plugs fouled and the car finely just died as the pipes under the car glowed almost white, smoking the carpet under the seats. Its color, tone, texture, and other visual characteristics are essentially identical to good plugs from the same engine. If your fuel injectors are cracked or damaged they can cause more fuel to be injected into your engine cylinders that may not fully be burnt off during the combustion process that will cause your spark plugs to turn black and wet over time. BTW, since first posting, the fouled plugs seem to have dried out a bit and don't look as bad. Briggs & Stratton Spark Plug Fits select Briggs & Stratton engines Resists fouling / corrosion providing easy starting and improved engine performance WARNING: Cancer and Reproduct. Champion marine spark plugs are quality OEM replacements. The construction method “stabilizes” the porcelain's temperature at a certain level to prevent fouling or pre-ignition. Took the plugs out today, the rear plug is fouled. 1Engine 16:23, 11 May 2014 (UTC) To vaporize, the gasoline must absorb heat from the engine. Spark plug maintenance entails simple cleaning and rotation on an annual or 100-hour schedule. Rolling Wrench 32,666 views. Average repair cost is $100 at 45,500 miles. Spark Plug L76V: 125: 1971-1972: 0. If the crankshaft position sensor fails, the loss of the basic timing signal will prevent the system from generating a spark and the engine will not start or run. Each time, it vaporizes a few molecules off the spark plug electrodes. It will ignite the air fuel mixture by the spark. Champion marine spark plugs are quality OEM replacements. Lawnmower Trouble With High Carbon in the Spark Plugs. Along with that, if those foul out, probably need to look at your tune for the sumer time, the PFC might be calling for to much fuel per lb of boost since you're on a MAP setup, and you're not getting enough dense air with the hot weather. Spark plugs are useful in powering up your car, keeping it powered up, and ensuring that your car runs smoothly. If the selected spark plug heat range is too cold, the spark plug may begin to foul when the engine speed is low or when operating in cold conditions with rich air-fuel mixtures. you are running too lean a fuel mixture and/or wrong ignition timing or too hot of spark plug. Use your 5/8″ spark plug socket and ratchet to apply gentle counter-clockwise pressure to unscrew the spark plug (remember: righty-tighty, lefty-loosey). Replace the spark plug with a new one. :banghead: HEEEELLLLLPPPPP. Spark Plug; Copper; Resistor; Autolite(R) Copper Spark Plugs are manufactured to deliver quick starts, improved fuel economy and smooth acceleration. Nationals at Lucas Oil Raceway at Indianapolis. ) Carb fuel level. Moreno Bros · Registered. Checking compression next so that may answer my question - although they are all pretty equally foul. Normally, fouled plugs are the result of improper fuel pressures and/or the engine not coming up to the correct temperature while at low speeds. ACCEL has improved the ignitability of the spark plug in a new design! ACCEL has always utilized unique electrode grounding designs to improve combustion and create a larger spark. Additional causes of plug fouling can be blamed on poor performing fuel injector as well as bad O-rings. Spark Plug Fouling by Larry Carley copyright 2019 AA1Car. The Air/Fuel Mixture. Checking compression next so that may answer my question - although they are all pretty equally foul. But mine has been utterly reliable otherwise - now over 56,000 kms, with the full system and DP ECU. It’s a good practice to wear insulated gloves. I was fouling plugs in my crate 360 magum and i went thru hell trying to figure it out, turned out to be a vaccum leak. Right before I finished the tank I pulled the plugs again. The spark plug has a pair of. Fouled propeller. Also, when I was running 32:1, there was oil dripping out my exhaust and making a mess. If you foul your. SBC 350 with vortec heads. I have a 97 5. A sufficient amount of voltage must be supplied by the ignition system to cause it to spark across the spark plug's gap. NOT sold individually. They can also leak or drip pressurized fuel. I've also posted a single closeup of the #4 plug. Engine Thermostat. To get it running again will involve draining all the diesel fuel from the tank, purging the fuel lines to get gas back up to the motor, and perhaps pulling and cleaning the fouled spark plugs. Hope this helps. They don't really like this. A worn spark plug not only wastes fuel but also strains the whole ignition system because the expanded gap (due to erosion) requires higher voltages. i was thinking of taking off the uni's and just trying that out to see if they still foul which is usually about 35 to 40 hours. The next thing you will want to do is to check for a fouled spark plug if your ECHO weed eater won’t start. Jump to Latest Follow 1 - 3 of 3 Posts. 50 - $200 each. Along with that, if those foul out, probably need to look at your tune for the sumer time, the PFC might be calling for to much fuel per lb of boost since you're on a MAP setup, and you're not getting enough dense air with the hot weather. If the spark plug has wet, oily. Or, at least take them out and check them. And with the new plugs in running at idle a short time started to do the same thing. NGK Spark Plugs, Spark Plugs, $2. To get it running again will involve draining all the diesel fuel from the tank, purging the fuel lines to get gas back up to the motor, and perhaps pulling and cleaning the fouled spark plugs. Hi guys, I am fouling plugs like crazy since I put on a Quick fuel carb (750 with vacuum secondaries). can be from bad carboration, spark, carbon, compression, misadjusted gap, just to name a few. Burning to much fuel will cause the spark plug to carbon foul causing the engine to stop running. That means a jerky and unreliable supply of energy for your car. Then walk away from it. Deposits won稚 have caked or lumpy deposits of oil fouled plug. A spark plug’s voltage requirement is directly proportionate to the gap size. The platinum with 0. I've removed and cleaned the carb, new air filter, checked the exhaust. Discussion Starter • #1 • Jan 5. Fuel fouling most often caused by extended operation with air and fuel mixture that is too rich. [Figure 1] Each time a spark plug does not fire, raw fuel and oil collect on the nonfiring electrodes and nose insulator. Whether I ride it for a short time or a long time, it doesn’t matter, it still becomes black. A too rich air/fuel mixture is a great way to ruin a spark plug. Based on the fact that I had no issues with oil fouling or consumption before, I'd be highly surprised if it's rings, valve guides or seals. I think fouling plugs has something to do with excess oil drowning out the plug. 035" gap before installation. Any time there is incomplete combustion, raw fuel can enter the exhaust and cause a smell similar to sulfur or rotten eggs. G-Power Spark Plug is the platinum alloy type providing the great performance with a quicker start, lower emissions and fuel efficiency. To enable you achieve this, check the spark plug manufacturer’s gap specifications. And with the new plugs in running at idle a short time started to do the same thing. Vintage Musclecar. Older vehicles may require this type of fuel for lubrication to operate smoothly. Confirm that the resulting spark is blue or white. 2012 Sierra 5. Use a spark plug gapping tool to create the correct gap in the spark plugs before installing them. Product page for NGK Iridium Spark Plugs Set fitment for the 2009 Lexus ISF. INDIANAPOLIS (September 6, 2020) – Funny Car driver Matt Hagan gave Don Schumacher Racing its 350th career win, beating teammate Jack Beckman in the final round of the rain-delayed Lucas Oil NHRA Summernationals, which was completed during final qualifying of Saturday’s DENSO Spark Plugs U. technician B says that a defective spark plug can cause an engine misfire. Fuel injection problems causing the spark plugs to get fuel fouled. Smallest tip diameter available Iridium / Platinum surfaces ensure slow wear rate providing stable idle, superior anti fouling, improved fuel efficiency and lower emissions. It was a horrible experience but I learned a lesson about spark plugs and salesmen treatment of females. 03: QL77JC4: Spark Plug QL16V *155 Commercial (90 degree CV) 1989-1992: Surface Gap: QL16V. Also cdi box can act like a spark plug is bad. through the spark plug • Effect: Not detrimental to spark plug operation • Remedy: Ensure that spark plug “well” is clean when installing new spark plugs Corona Discharge Stain • Appearance: Soft, black, sooty deposits on the firing end of the plug • Cause: Rich air-fuel mixture, weak ignition, spark plug too cold or repetitive. The more sensitive a fuel is the more its performance degrades under load. Spark Plug Fouling and How to Avoid It In most cases spark plug fouling can be reduced or eliminated by simply applying proven operating techniques. a fouled spark plug is when it isn't burning the fuel cleanly, usually leaving wet oilly deposits of the plug, thus causing it to misfire even more. A worn spark plug not only wastes fuel but also strains the whole ignition system because the expanded gap (due to erosion) requires higher voltages. Normal Mechanical Damage. They also changed the contaminated oil and the original fouled plugs. Champion QL16V Marine Spark Plug. TEMPEST AVIATION SPARK PLUG UREM37BY – Aviation Parts Inc. The two stroke manufacturers came up with a great cure. ACCEL has improved the ignitability of the spark plug in a new design! ACCEL has always utilized unique electrode grounding designs to improve combustion and create a larger spark. First do a dry test and see what the compression is, then do a wet test by squiting a bit of oil in the spark plug hole. I am sure this is a problem that could be found on other John Deeres using the "K" engine. Now almost out of gas. Hi I just bought 2 three wheelers today, a 1985 Honda atc 110 and a 1979 atc 70. It was recently rebuilt, has great compression. The theory and operation of those types of glow-plugs is substantially different than those used in diesel aircraft engines. Checked fuel pressure; 65psi, I changed the filter anyway because it was pretty hard to blow through. Fuel injection engines would produce carbon fouling from clogged fuel injectors, vacuum leaks. Guaranteed to deliver quick starts, good fuel economy and smooth acceleration. Valve clearance. Hi guys, I am fouling plugs like crazy since I put on a Quick fuel carb (750 with vacuum secondaries). thanks for all inputs please keep them coming. I've removed and cleaned the carb, new air filter, checked the exhaust. Look for oil or fuel-fouled electrodes. Along with that, if those foul out, probably need to look at your tune for the sumer time, the PFC might be calling for to much fuel per lb of boost since you're on a MAP setup, and you're not getting enough dense air with the hot weather. Burning oil can cause spark plug fouling. Advantages of Iridium spark plug types. they said there were no codes in the ECM. Carbon Fouling If the spark plugs have a matte black or grey appearance, it could be carbon fouling — something typically caused by a fuel mixture that is too rich. Dual platinum surfaces ensure a slow wear rate providing stable idle, superior anti-fouling, improved fuel efficiency and lower emissions. The other 3 looked fine with no gas smell. Yes, spark plugs are typically inspected if the engine is misfiring, hesitating or not running properly. If the spark plug is fouling it is fouling due to excess fuel (a leaking injector) or oil fouling. Any ideas. It’s a good practice to wear insulated gloves. This worked fine at high speeds but at low speeds there was too much oil. Going back to the original breakdown, what I know is the vehicle stalled, and for some reason the driver decided to install a cam synchronizer. as this is properly the problem, you will need to adjust the Air/fuel mixture screw. Also, the plugs in cylinder 2 and 3 are starting to foul. In this article, we’re just going to discuss heat range. A rich fuel mixture (too much fuel for the amount of air in the cylinder) can cause an engine to load up at idle, foul the spark plugs, and also lack power or run sluggish. Champion marine spark plugs are quality OEM replacements. Fuel economy can go down as much as 30 percent due to incomplete combustion. If your tuning your engine its always better to use a old plug. The fuel level can become excessive if the float valve sticks open, cannot seal, or opens too much. Carbon fouling also happens with weak spark, and they say 90% of carb problems are electrical. Is the spark plug fouled? Clean spark plugs where applicable (Follow instructions for checking and changing spark plugs). Loss of spark includes anything that prevents coil voltage from jumping the electrode gap at the end of the spark plug. 035" gap before installation. To enable you achieve this, check the spark plug manufacturer’s gap specifications. According to NGK Spark Plugs, when the insulator nose of the spark plug is coated, it is considered fouled. Electrical energy is transmitted through the spark plug, jumping the gap in the plugs firing end if the voltage supplied to the plug is high enough. The factory spark plugs in the 2016 - 2018 Ford Focus RS have been found to vary widely in gap opening from plug to plug which can lead to spark blowout, misfires and poor fuel economy, especially when running higher than stock horsepower levels. Replied by Rev Scott on topic 2006 Ford Ranger 3. Engines designed for street use are usually equipped with “hot” spark plugs to ensure better cold-start characteristics and reduced fouling. Replace the spark plug with a manufacturer-approved replacement part if it's fouled or the ceramic insulator is cracked. ¶ In the old days, two stroke engines used a fuel mixture of gas and oil called Pre-Mix. We have friendly staff who will take care of you Address: 752 Tamiami Trail Port Charlotte, FL 33953. If the spark plugs have a matte black or grey appearance, it could be carbon fouling — something typically caused by a fuel mixture that is too rich. Conversely, hot plugs are good for applications that operate mainly at low rpms. This gap distance is a critical measurement to assure optimum spark efficiency and engine performance. Along with that, if those foul out, probably need to look at your tune for the sumer time, the PFC might be calling for to much fuel per lb of boost since you're on a MAP setup, and you're not getting enough dense air with the hot weather. This is usually caused by two things: Improper fuel level and/or blown power valves. Spark plug heat range is the relative temperature of the spark plug's core nose. Carbon fouling. Carbon fouling is not the plug's fault, however, the outboard's owner had installed a plug that was too cool for the engine. Nationals at Lucas Oil Raceway at Indianapolis. 03: QL77JC4: Spark Plug QL16V *155 Commercial (90 degree CV) 1989-1992: Surface Gap: QL16V. No more cylinders blowing up. I run a Stihl 028 AV Super, and it is using a lot of plugs and clogging up the muffler screen quite easily. I started playing around with the 110 and got it to run. Fuel pressure is right at 40psi and 35psi at running. Jump to Latest Follow 1 - 13 of 13 Posts. BTW, since first posting, the fouled plugs seem to have dried out a bit and don't look as bad. Any ideas. When I had pulled the boot from the right side I pulled the cable out and noticed corrosion, trimmed the wire back a little put it back in and pulled it out. Spark plug gapping: To prevent a reoccurrence, use the right spark plug size. Fouling of the entire set might result from an incorrect heat range spark plug or an over-rich air/fuel mixture caused by a clogged air cleaner filter element, a sticking heat riser valve. I have 2007 has no power to y&g wire so no fuel no spark so will turn over no start i have remade a new wire harness and the same thing wont start unless i run a hot wire to fuel fuse (y&g) wire then it fires rite up but starts running rich so its not rite but if i mess with four ground wires i will get power to wire but wont start so is it the ecm or bad ground. Carbon fouled Carbon-Fouled-Spark-Plugs Black, dry soot on the electrodes and insulator tip indicates a carbon-fouled plug. The spark plug has a pair of. Loss of spark includes anything that prevents coil voltage from jumping the electrode gap at the end of the spark plug. ¶ In the old days, two stroke engines used a fuel mixture of gas and oil called Pre-Mix. Normal rates of gap growth are as follows: Four Stroke Engines: 0. The spark plug has two primary functions: To ignite the air/fuel mixture. Faster and larger flame kernel puts more of the available fuel to work with less wasted gas, resulting in more power, better fuel efficiency and lower emissions. Lead fouling can cause your engine to misfire only at high-rpm and under hard acceleration. The theory and operation of those types of glow-plugs is substantially different than those used in diesel aircraft engines. 0 Mustang Tech: 7: Dec 28, 2004: T: Symptoms of Dirty/Fouled/Bad Fuel Injectors: 2. FACTORS AFFECTING THE EFFICIENCY OF THE PLUG. They also changed the contaminated oil and the original fouled plugs. ( also had a code for #5 misfire) what else could it be ? The engine is now completely rebuilt, except sensors and c. Any ideas. We pulled the plugs and noticed they were all fouled on the drivers side. Confirm that the plug is clean and not fouled with carbon deposits. Upon further investigation, technicians may find cylinder #1 and #7 spark plugs oil fouled and/or the porcelain may be cracked or broken on the combustion chamber side. See SAE 780006 and SAE 810010 Two spark plugs per cylinder make it easier to ignite dilute mixtures and helps to prevent misfires. John Deere D100 Series Lawn Tractor: How to Replace the Spark Plug. With the engine warm remove the spark plugs with a small light look at the top of the pistons. The spark plug should be replaced. there are many things that can cause the spark plug to be wet with fuel such as bad tps sensor or need to be reset if removed, bad coil, tps sensor and air pressure sensor plugs crossed, fuel injector plugs crossed or pto fuel injector and rave solenoid plugs crossed, a bad air pressure sensor, or bad mpem. Car definitely runs great until the plugs foul out. I did buy new slow jets(40), new plugs(D7EA), new air filter, inline fuel filters. Cdi problems on these are pretty normal after they get older. There is no mechanical connection for checking fuel pressure. ECT is reading good (77 degrees F) The truck will run if I clean the fuel fouled plugs, disable the fuel injectors, and induce an alternate fuel supply. Nationals at Lucas Oil Raceway at Indianapolis, the sixth of 11 events in the NHRA Mello Yello Drag. Pay close attention to this screw if you are fouling or damaging plugs or bogging at low and high throttle rates. New valve cover also. If the spark plug has wet, oily. Determine Condition of your Lawnmower Spark Plug using These 5 Steps: Disconnect the spark plug wire; Remove the spark plug; Inspect the Electrode on the spark plug for damage; Determine the Condition of Electrode: Normal or is it Wet, gas or Carbon fouled; Replace the spark plug if the electrode is worn or damaged or bad conditions exist. Each time, it vaporizes a few molecules off the spark plug electrodes. Spark plugs are an often overlooked but crucial part of a race engine and focus on how spark plug tuning changes can squeeze out extra power - Circle Track Magazine Carbon Fouled Insulator. A worn spark plug not only wastes fuel but also strains the whole ignition system because the expanded gap (due to erosion) requires higher voltages. The fuel level can become excessive if the float valve sticks open, cannot seal, or opens too much. There are three basic conditions for spark plugs: best, fouled and overheated. Fouling of the entire set might result from an incorrect heat range spark plug or an over-rich air/fuel mixture caused by a clogged air cleaner filter element, a sticking heat riser valve. There is no third-party that influences us to choose them or so. If i clean the plugs and put them in and crank it for a little bit then pull the plugs back out they are fouled with fuel. When an engine isn't running properly carbon can build up on the components in the combustion chamber (which includes the spark plug). The copper core increases the rate of heat conduction in the spark plug tip and improves resistance to all types of fouling. 600cfm 1406 Eddy. The Bosch fuel injector has a return rate of 1 part per million (PPM), making Bosch the industry benchmark. Gary: I have a johne Deere lx188. 6 New NGK Iridium IX Spark Plugs LFR5AIX-11 # 4469 By NGK. ACCEL has improved the ignitability of the spark plug in a new design! ACCEL has always utilized unique electrode grounding designs to improve combustion and create a larger spark. They were all in different positions. Spark plug fouled by excessive fuel will have dry, black, fluffy deposits on plug electrodes. The spark plug is an essential component of any gasoline-powered trimmer or edger. Moving to a premium, fine-wire plug reduces fouling, improves engine starts/smoothness, and extends plug life by three to four times. They've got the engine controller programmed for everything. Carbon fouling from fuel is associated with mixtures that are too rich to burn or mixtures that are so lean they cause intermittent firing. Fouling the plugs so bad had to change them. What's a good way to diagnose fouled spark plugs? What could be causing them to foul? My 2002 E320 4Matic wagon with 150k mi has been idling rough and finally threw a code for cylinder 2 misfire, in conjunction with notable loss of power. Also compressions went up to 80/80 at last oil change, so guessing it also cleans deposits off the valves/seats. Spark Plug Condition Chart. Checking compression next so that may answer my question - although they are all pretty equally foul. Causes can include the engine overheating, incorrect spark plug heat range, a loose spark plug, incorrect ignition timing or too lean of an air/fuel mixture. The rest of the plugs look ok, maybe a little lean. Going back to the original breakdown, what I know is the vehicle stalled, and for some reason the driver decided to install a cam synchronizer. The best spark plug non-foulers for cars and trucks prevents the spark plugs from fouling. Gapping the plugs to your engine’s specifications is important to prevent pre-ignition, detonation, fouling and poor fuel economy. If your tuning your engine its always better to use a old plug. They don't really like this. Hope this helps. A clean, white insulator firing tip and/or excessive electrode erosion indicates this spark plug condition. dirty air cleaner 4. It runs great for a while then starts blowing smoke and missing. There used to be a product for sale which you placed between spark plug and wire to do the same thing. my father has a 1994 KLF300-C6 Bayou 4x4 that fouls the spark plug within 30 minutes. With the fuel pump running, the injectors should not leak or drip fuel. A worn spark plug not only wastes fuel but also strains the whole ignition system because the expanded gap (due to erosion) requires higher voltages. The Nissan engine with two spark plugs was called the NAPS Z engine. I have Dart Iron Eagle Platinum heads 200cc. Champion QL77CC Marine Spark Plug. Fuel lines leaking or clogged: Tighten fitting, remove restriction: Initial timing incorrect: Reset ignition timing see ENGINE PERFORMANCE: Centrifugal advance malfunction: Repair distributor advance: Defective spark plugs or wiring: Replace plugs or plug wiring: Component Failure: Spark arc-over on cap, rotor or coil: Replace cap, rotor or or coil. A: A spark plug is considered fouled when the insulator nose at the firing tip becomes coated with a foreign substance such as fuel, oil or carbon. The fuel level problem could be a misadjusted float, excessive fuel pressure, bad float valve, or bad float. The construction method “stabilizes” the porcelain's temperature at a certain level to prevent fouling or pre-ignition. Spark plugs have 2 jobs. I have yet to see a fouled iridium spark plug - and I have seen them on engines with more than 300,000 kms on them too. I am sure this is a problem that could be found on other John Deeres using the "K" engine. I took out the four idle air screws and put in carb cleaner and put back in to gently seat, then back out 1 turn and will leave them alone now. Power loss Oil consumption/ smoking Fouling spark plugs Hard starting. This can cause a rich condition and fouled plugs while the engine is running. If , black and sooty the engine is running too rich in the fuel departement or too cold of spark plug. Fuel fouling can cause a mild to bad miss or complete no-start issue, and the standard method is to either entirely replace them, or possibly restore them with heat. Pulled the plug out and its black and sooty. You should run this check for each cylinder, regardless if the plugs were fouled. Slow jet or air passage clogged or restricted. it runs good, but like the guy i bought it from said, it fouls plugs. The best spark plug non-foulers for cars and trucks prevents the spark plugs from fouling. Normal rates of gap growth are as follows: (0. This can indicate a problem with a spark plug not working properly. Im running a 355 with 11:1. SPARK PLUG CONSTRUCTION A spark plug has a center electrode, a ceramic insulator, a metal casing or shell, and a side or ground electrode. Champion QL77CC Marine Spark Plug. 3 and the spark plugs are fouled on the driverside. 0 OHV Cranks, no Start, fuel fouled plugs. We pulled the plugs and noticed they were all fouled on the drivers side. Fuel-fouled plugs may have a shiny coating on the tip and side electrode, which may indicate a too-rich fuel mixture, ignition problems or a plug heat range that’s set too low. i was thinking of taking off the uni's and just trying that out to see if they still foul which is usually about 35 to 40 hours. I just changed the fuel ratio to 40:1 instead of 32:1. I replaced the plugs and the engine ran okay for a bit were the fouling happened again. Air/fuel mixture incorrect: Idle air screw mis-set. It had soot, looked wet with a strong gas smell. The spark plug keeps fouling. So I'd say switch to a 7 heat range or so. Ran a little better for a couple min. Riders who foul plugs all the time are putting less oil in their gas/oil mix in the belief that the oil is fouling the plugs, and many racers are trying to solve “too rich, too lean” problems. All bikes are different tho. The device also prevents oil that is by-passing the piston rings, valve guides or valve stem seals from splashing onto the spark plug and fouling it. Older vehicles may require this type of fuel for lubrication to operate smoothly. The trick is to how to get the correct coloring without going into detonation and destroying the engine or by going too rich and raising the ring lands. a fouled spark plug is when it isn't burning the fuel cleanly, usually leaving wet oilly deposits of the plug, thus causing it to misfire even more. I put expensive plugs in my truck 6 months ago and recently the plugs have been fouled out or wet plug due to a low output coil. Carbon deposits are conductive and can create a path for spark plug misfire. If the compression goes up the rings are bad, if the compression stays the same the valves need. Spark plugs are essential part of your car's system, so it's important to know all you can about them - types, material, wiring, design, replacement tips. One important detail: Make sure the engine is in good mechanical condition. When air and fuel start to mix inside of the internal combustion chamber, it needs an electrical spark to ignite. Fuel is non-ethanol and has been since the engine was new. com Forums > Models > Saturn S-Series > S-Series Tech: trouble starting, fouled plugs, fuel smell. A fouled spark plug won’t be able to deliver electric current from the ignition system, which is necessary to ignite the fuel in the combustion chamber of your weed eater. These marine spark plugs are designed to resist overheating under heavy engine loads. In Sept 2016 at 117k mi, I had rough idling and a code. Also you may get fouled plugs and deposits in the exhaust ports and headers. My fuel mixture is fine, its only one cylinder and not the other and not both. Going to replace them with NGK stock equivalent plugs probably. For faster, easier and more consistent starts, use Champion eco-clean spark plugs. With the fuel pump running, the injectors should not leak or drip fuel. :banghead: HEEEELLLLLPPPPP. its a single carb thats tuned stock and is clean. Fouled propeller. Note the brown to greyish tan color, and minimal amount of electrode erosion which clearly indicates the plug is in the correct heat range and has been. Spark plug cap not in good contact with spark plug. Dual platinum surfaces ensure a slow wear rate providing stable idle, superior anti-fouling, improved fuel efficiency and lower emissions. Right before I finished the tank I pulled the plugs again. Yes you can over octane an engine. So I seem to keep fouling plugs. I have never fouled out a spark plug on my snow blower (8hp 4 stroke), but then they dont sell reformulated gas in the winter months. I do have a replacement coil I could install but then stock one seems fine as once you swap out the plug the thing starts, runs and idles like a charm. Spark plugs can still be fouled by oil or fuel deposits as well as preignition and detonation. It was causing the cylinders to misfire. ) Carb fuel level. Going to replace them with NGK stock equivalent plugs probably. Pulled the plug out and its black and sooty. Introduction. Autolite spark plugs traditionally leave the factory pre-gapped for their most popular application. Put new plugs in and it runs great for a couple days then runs like its down a cylinder, pull the plugs and two of them are black. Nationals at Lucas Oil Raceway at Indianapolis. 5 million to 110 million times. It was a horrible experience but I learned a lesson about spark plugs and salesmen treatment of females. Car definitely runs great until the plugs foul out. Magneto damaged. Even your temperature of 60F is not a problem at all for the spark plug. its a single carb thats tuned stock and is clean. With the engine warm remove the spark plugs with a small light look at the top of the pistons. They can become clogged with deposits that form as the extra fuel dries in the injector's hot tip as the engine cools. Faster and larger flame kernel puts more of the available fuel to work with less wasted gas, resulting in more power, better fuel efficiency and lower emissions. Finding the best spark plug can do the job very efficiently. I get code 0202 injector #2 0201 injector #1 and 0302cylider #2 misfire, pull all the plugs and they are all fuel fouled. No matter what I did with the Holly I couldn't get. Lead fouling can cause your engine to misfire only at high-rpm and under hard acceleration. Burning to much fuel will cause the spark plug to carbon foul causing the engine to stop running. For use in Non-Turbocharged Continental, Lycoming and Franklin Aviation Engines. Cause: Incorrect mixture setting (carburetor fuel injection); mixture too rich, air filter very dirty, automatic choke not in order or manual choke pulled too long, mainly short-distance driving, spark plug too cold, heat-range code number too low. The Champion QL77CC Spark Plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. 4-Strokes, although it is not as common, do foul plugs. Toluene has a sensitivity rating of 14 (RON: 121-107 MON). KAM was reset before I got to the vehicle, so my BARO is defaulted to 150Hz. Oil Fouled Combustion deposits are slight and not heavy enough to cause any detrimental effect on engine performance. They run about $1. Briggs & Stratton Spark Plug Fits select Briggs & Stratton engines Resists fouling / corrosion providing easy starting and improved engine performance WARNING: Cancer and Reproduct. as this is properly the problem, you will need to adjust the Air/fuel mixture screw. This causes a misfire, a loss of power and fuel economy, and an increase in tailpipe hydrocarbon (HC) emissions. Upon further investigation, technicians may find cylinder #1 and #7 spark plugs oil fouled and/or the porcelain may be cracked or broken on the combustion chamber side. (carburetor fuel injection); mixture too rich, air filter very dirty, automatic choke not in order or manual choke pulled too long, mainly short-distance driving, spark plug too cold, heat-range code number too low. It does this by transmitting electrical energy through itself, jumping the gap between the plugs’ firing end, as long the voltage supplied to the plug is high enough. Spark plugs can still be fouled by oil or fuel deposits as well as preignition and detonation. It idles nice on a rich fuel mixture but as a result it fouls the spark plugs. Incorrect transom height or placement of motor on boat. INDIANAPOLIS, IN – September 6, 2020 – (Motor Sports NewsWire) – Funny Car driver Matt Hagan gave Don Schumacher Racing its 350th career win, beating teammate Jack Beckman in the final round of the rain-delayed Lucas Oil NHRA Summernationals, which was completed during final qualifying of Saturday’s DENSO Spark Plugs U. my father has a 1994 KLF300-C6 Bayou 4x4 that fouls the spark plug within 30 minutes. The lead, known as tetraethyllead, serves as an octane booster. Anything from excessive wear to cracks can cause the spark plug to become fouled. When a plug is fouled it gets coated in some substance like oil or carbon. Ignition operation. Check for such things as a stuck choke, a heavy or misadjusted carburetor float, a leaky needle valve in the carburetor, leaky injectors, low coil output or high resistance in the plug wires. Eventually, the spark plug gap widens, and the air-fuel mixture no longer ignites efficiently. The fuel level can become excessive if the float valve sticks open, cannot seal, or opens too much. If we look at the example of a Champion REM-37-BY plug which is recommended for the most of the Lycoming O-320 and O-360 engines, this plug does not prevent the accumulation of Lead deposits, but its design is supposed to make it capable of firing even with severe Lead deposit. Spark plug fouled by excessive fuel will have dry, black, fluffy deposits on plug electrodes. Oil fouling. Injection oil pumps. The spark plug won't create spark if deposits build up on the spark plug electrode or if the ceramic insulation cracks. Discussion Starter. If the plugs are in a heat range too cold, they will foul up VERY fast. This OEM part ensures proper fit and performance to maintain the life of your Briggs & Stratton engine. To remove heat from the combustion chamber. Normally, fouled plugs are the result of improper fuel pressures and/or the engine not coming up to the correct temperature while at low speeds. Trying to jet a worn out engine is a waste of time. Pull the ignition lead wire off the spark plug. 7 Chevy silverado 2 of my spark plugs are fouled with gas I changed coolant temp sensor it didn't fix it help please it's rough idle fouled spark plugs with gas miss plugged to computer says miss on cylinder and o2 sensot. In this case, the possible issues are: A dirty spark plug; A cracked or faulty spark plug; Troubleshooting Spark Plug Related Issues. Those plugs are right at the bottom of the head and oil runs into them really easily. Jump to Latest Follow 1 - 20 of 31 Posts. I even throw 2 stroke oil in mine to make the exhaust smell good and never fouled a plug. Can a bad catalytic converter cause the engine to use more oil? My car is a 2001 Jetta w/2. Same problem and have had the problem for a long time. If your tuning your engine its always better to use a old plug. Carbon fouling is an indication of a rich air-fuel mixture, weak ignition, or improper heat range (too cold). (1) Spark plug selection ・ As a countermeasure to increased stress on the ground electrode, changing to a spark plug with a small ground electrode is an effective way to handle the problem from the plug side. And I don't know how plug is getting fouled, I just know that in the winter after it has sat unstarted for 4 or 5 days and I try to start it, 99% of the time it won't start. Moreno Bros · Registered. A rich fuel mixture (too much fuel for the amount of air in the cylinder) can cause an engine to load up at idle, foul the spark plugs, and also lack power or run sluggish. TCP is the only FAA approved product of its kind. DONT GET CHINESE CRAP. Don't just pull on the wire. If we look at the example of a Champion REM-37-BY plug which is recommended for the most of the Lycoming O-320 and O-360 engines, this plug does not prevent the accumulation of Lead deposits, but its design is supposed to make it capable of firing even with severe Lead deposit. However, while the spark plugs typically are designed to be kept dry so they can continue consistently producing sparks, they can get soaked with gasoline. It runs great for a while then starts blowing smoke and missing. Fuel fouling most often caused by extended operation with air and fuel mixture that is too rich. If you engine SQUEALS HIGH PITCH, High IDLE TO Much AIR/TO LITTLE OIL not enough fuel (I CAUTION YOU "HIGH PITCH, WITH HIGH HEAT YOUR FUEL NEEDS MORE OIL, ALWAYS< I SAY ALWAYS ERROR ON THE SIDE OF TO MUCH OIL-FOULING PLUGS, PLUGGING EXHAUST WITH OIL, THE other side is not enough oil and scouring or seizing your cylinder for lake of lubrication. Carbon Fouled. Spark plugs come pre-gapped, but should be checked for. 3 :) 2-1 is 4oz oil to 1 gal. Lead fouling generally shows up as yellowish brown deposits on the spark plug’s insulator nose. If the spark plug is fouling it is fouling due to excess fuel (a leaking injector) or oil fouling. Fuels – fuel conductivity will affect the voltage requirement in that a very conductive fuel can, when it wets the spark plug, bleed off a portion of the electrical charge. ) White, no color on spark plug: Too lean. #7 was also badly oil fouled, and remember, I didn't touch that side. Spark Plugs will usually have to gapped to the manufactures specifications found in the owners manual. In some cases, the insulator nose can usually be cleaned by operating the engine at higher speeds in order to reach the self-cleaning temperature. :banghead: HEEEELLLLLPPPPP. This can indicate a problem with a spark plug not working properly. G-Power Spark Plug is the platinum alloy type providing the great performance with a quicker start, lower emissions and fuel efficiency. If you fouled a plug you fouled a plug. A fouled spark plug won’t be able to deliver electric current from the ignition system, which is necessary to ignite the fuel in the combustion chamber of your weed eater. Discussion for the Ryobi RY80030 Gasoline Pressure Washer. Fouled plugs - fuel pressure too high? Classic Mustang Specific Tech: 5: Jun 9, 2007: D: Cylinder full of fuel/ plug not fouled: Fox 5. They've got the engine controller programmed for everything. If the carburetor is clogged, the use of spray carburetor cleaner and pressurized air may clear the obstruction.