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Keeps fouling 2 and 4 plugs changed leads and plugs

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If your spark plugs have oil on them.End keep on fualing up all the time The oil rings are letting oil get past them, Engine will have to be rebuilt,

Posted on Oct 25, 2012

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SOURCE: runs rich on start up runs ok when hot

The MAP (Manifold Absolute Pressure) sensor COULD be the culpret but first I would check the choke for proper operation.

Posted on Jun 18, 2009

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SOURCE: one plug foul after 200 miles runs ruff

the next time it fouls check the plug when you take it out, if it is covered with oil then you may have a broken ring on the cylinder that is allowing oil to pass through to the combustion chamber and fouling the plug. Or the valves pay be letting oil drain in past the valve seats.

Posted on Jul 04, 2012

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I have a 2012 Kia Sorento that keeps fouling out the number 2 plug. any idea what can be causing it to foul out.


Have you noticed the car losing water? How is the plug fouling? Does it have oil on the plug or is it wet with water? You could be losing a coil pack too.

Dec 05, 2016 | 2012 Kia Sorento

1 Answer

Fouled spark plugs


Usually one of 2 causes. Most common is a bad valve stem oil seal allowing the oil past the valve stem when the engine is shut off.Second is a broken or bad oil ring on that piston. Be blessed.

Jan 02, 2014 | Ford Cars & Trucks

1 Answer

Toyota


I think you have burnt valve seat or head gasket either cylinder head has to be removed

Nov 23, 2013 | Cars & Trucks

3 Answers

#2 misfire fouled spark plug in sunfire


yes bad leads will be one of the faults
run the motor in the dark raise the bonnet look for sparkle trails
on the leads

coil pack could be faulty

compression test will tell if it is a leaky valve

back fire can be running lean or timing

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Mar 31, 2017 | 1997 Pontiac Sunfire

2 Answers

One plug foul after 200 miles runs ruff


the next time it fouls check the plug when you take it out, if it is covered with oil then you may have a broken ring on the cylinder that is allowing oil to pass through to the combustion chamber and fouling the plug. Or the valves pay be letting oil drain in past the valve seats.

Jul 04, 2012 | Chevrolet Caprice Classic Cars & Trucks

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

Gas fouls number 2 spk plug but everything checks out good what should i check


swap your plug over with one from another cylynder-if new plug in 2 still fouls then its not the plug its the lead or the distributer cap-check inside distributer cap for thin black lines runniing from one contact to another-its called arcing,you cant cure it ,buy a new cap

Feb 25, 2010 | 1997 Geo Metro

1 Answer

1997 sonoma fouling plugs


1) Identify the foweling type http://www.gnttype.org/techarea/engine/plugs.html
2) "Worn piston rings or valve seals may allow too much oil to leak into the combustion chamber, leading to oil fouling." This could be your case http://www.ngksparkplugs.com/techinfo/spark_plugs/faq/faqfouled.asp?nav=31200&country=US
More reading http://www.autotap.com/sparkplugs/ppc_spark_plugs_replace.html
Good luck!

Jun 26, 2009 | 1997 GMC Sonoma

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