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SPARK PLUGS FUEL FOULING OUT

SPARK PLUGS KEEP FUEL FOULING OUT

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Change fuel filter & try dry gas

Posted on Jan 08, 2013

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1 Answer

Spark plugs keep fouling out, why


Monica, reasons for plugs to foul, bad fuel, wrong spark plugs, failing ignition components(wire,coil,points,etc),worn engine internal components(pistons,rings,valves), faulty/incorrect adjustment on carburetor,etc.
Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
Technical information

https://www.google.ca/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=spark+plug+fouling+chart

Mar 25, 2016 | Electrical Supplies

1 Answer

125 Pitbike keeps fouling spark plugs


Hi, Damon and the usual suspects are:
1. Dirty air filter.
2. Fuel mixture too rich or the choke has been left on too long.
3. Faulty spark plug.
4. Incorrect spark plug heat range for the engine type or service.
5. Piston rings badly worn or broken.
6. Valve guides are badly worn and/or seals worn, crushed or have come off the valve guide and are pumping oil through it.
7. Spark plug cable weak or leaking check for spark leakage in the dark.
8. Faulty ignition coil.
9. Low RPM nonaggressive riding style.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Why Does My Dirt Bike Keep Fouling Spark Plugs
Spark Plugs Keep Fouling
http://mypitbike.ru/downloads/ThumpstarServiceManual.pdf
https://www.orionpowersports.com/pit-bike-dirt-bike-parts
http://www.ssrmotorsports.com/store/ownersmanual/pitbike/Pit%20Bike%20Owner's%20Manual.pdf

Sep 13, 2014 | Pit Bike 125cc 4 Stroke Dirt Bike

1 Answer

Truck starts but stops immediately and smoke comin out of my tailpipe


Well it depends on the color of smoke if it's WHITE; it could be a blown head gasket (check coolant levels and then oil to see if it is milky looking) BLUE: could be burning oil, which could result to fouling plugs (check spark plugs for fouling) BLACK; too much fuel flooded (check spark plugs for fouling)

Oct 12, 2013 | 2000 Chevrolet Blazer

1 Answer

MY 1998 YZ 125 KEEPS FOULING PLUG AND THEN BOGS DOWN


Hi, Anonymous and the usual suspects are:
1. Fuel mixture too rich or enrichner left out too long.
2. Incorrect spark plugs for your kind of service.
3. Piston rings badly worn or broken.
4. Valve guides are badly worn and/or seals worn, crushed or have come off valve guide and pump oil through it.
5. Spark plug cable weak or ignition coil faulty.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
Why Does My Dirt Bike Keep Fouling Spark Plugs
Fouling plugs in my yz 125
YAMAHA YZ125 Owner Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Mar 18, 2013 | Yamaha YZ 125 Motorcycles

1 Answer

Why does my 125 ttr keep on fouling plugs


Hi, Anonymous and the usual suspects are:
1. Fuel mixture too rich or enrichner left out too long.
2. Faulty spark plug.
3. Incorrect spark plug for the engine type or service.
4. Piston rings badly worn or broken.
5. Valve guides are badly worn and/or seals worn, crushed or have come off the valve guide and are pumping oil through it.
6. Spark plug cable weak or leaking check for spark jump in the dark.
7. Faulty ignition coil.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
Why Does My Dirt Bike Keep Fouling Spark Plugs
TTR 110 keeps fouling the spark plug
YAMAHA TT R125 Owner Service Manual
OEM parts for Yamaha
YAMAHA TT R110E Owner Manual

Feb 09, 2012 | 2006 Yamaha TTR125LW

1 Answer

Scott, 95 GMC 5.7L keeps fouling plugs


Hi Dale,

Several factors can contribute to spark plug fouling:

- The air/fuel ratio may be too rich as a result of incorrect carburetor adjustment or a poorly performing fuel injection system.
- Worn piston rings or valve seals may allow too much oil to leak into the combustion chamber, leading to oil fouling.
- The ignition system may not be performing properly.
- Prolonged idling or continuous low-speed driving may keep the spark plug from reaching its optimum operating temperature. Using too cold a spark plug can lead to the same problem.
- A dirty air cleaner can create a too-rich condition which can lead to fouling.

Have each of the above checked and corrected.

Fuel, oil and carbon fouling can all be the result of different causes but, once a spark plug is fouled, it will not provide adequate voltage to the firing tip and that cylinder will not fire properly.

In many cases, the spark plug cannot be cleaned sufficiently to restore normal operation. Hence, I always recommend that a plug be replace, once it becomes fouled.

Cheers,

Scott


"If this has helped you in any way, please be kind enough to rate this solution"

Nov 02, 2011 | 1995 Chevrolet K1500

1 Answer

95 GMC 5.7l keeps fouling plugs


Hi Dale,

Several factors can contribute to spark plug fouling:

- The air/fuel ratio may be too rich as a result of incorrect carburetor adjustment or a poorly performing fuel injection system.
- Worn piston rings or valve seals may allow too much oil to leak into the combustion chamber, leading to oil fouling.
- The ignition system may not be performing properly.
- Prolonged idling or continuous low-speed driving may keep the spark plug from reaching its optimum operating temperature. Using too cold a spark plug can lead to the same problem.
- A dirty air cleaner can create a too-rich condition which can lead to fouling.

Have each of the above checked and corrected.

Fuel, oil and carbon fouling can all be the result of different causes but, once a spark plug is fouled, it will not provide adequate voltage to the firing tip and that cylinder will not fire properly.

In many cases, the spark plug cannot be cleaned sufficiently to restore normal operation. Hence, I always recommend that a plug be replace, once it becomes fouled.

Cheers,

Scott


"If this has helped you in any way, please be kind enough to rate this solution"

Nov 02, 2011 | 1995 Chevrolet K1500

1 Answer

John deere 135s won't start briggs and stratton 22 hp engine it is getting spark and fuel and I just put new plugs in because the looked fouled.


Hello,

There are four reasons for fouled spark plugs, 1, You have a resticted air flow ( dirty air filter, or partially engaged choke), so the mixture is rich all the time fouling tghe plugs. 2, You have a poor quality fuel ( old, stale ), and it wont combust/burn hot enough, then fouling the plugs. 3, You might have a piston ring failure causing engine oil to be left on the cylinder wall instead of being wiped back down, and then burning as part of the combustion process. Thus burning and causingg a rich condition again, and fouling the plugs. Then finally number 4, low engine compression. This is again caused by worn cylinder walls and worn piston rings, causing compressed air/fuel mixture to leak past the rings into the crankcase, and when the fuel/air mixture is compressed then ignited, some of the air needed to ignite the fuel has escaped, and thus a rich condition again, fouling the plugs.


Determining which of the Four are causing you fouling is your next step.

Hope this helps

Nov 12, 2010 | John Deere 420,1020,2010,2020,2510,2520...

1 Answer

Why does my Aviator keep fouling the plugs


POSSIBLE CAUSES FOR SPARK PLUGS FOULING OUT. WEAK SPARK IGNITION SYSTEM - STOP UP AIR FILTER - LEAKING FUEL INJECTORS - FAULTY FUEL PRESSURE REGULATOR WITH LEAING DIAPHRAM.

Aug 11, 2010 | 2003 Lincoln Aviator

2 Answers

Cyl#3&5 foul plugs 97 suburban good compression all cyl new cap rotor distributor wires plugs module


Fouling occurs when the spark plugs' firing tip becomes coated with excessive fuel, oil, or combustion deposits so that it is unable to produce a spark. A plug can become fouled from continuous low speed driving, improper spark plug heat range (too cold), improper timing (over-retarded), too rich an air/fuel ratio or an oil leak into the combustion chamber. A variety of self-cleaning features are designed into most plugs to reduce fouling.

Jul 17, 2009 | 1999 Daewoo Nubira

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