Engine oil in spark plug well


Old 10-24-06, 01:30 PM
Thread Starter
Join Date: Oct 2004
Location: Florida
Posts: 358
Engine oil in spark plug well

98 Plymouth Breeze 2.0L overhead cam

When I removed a spark plug for inspection, the upper threads were wet with engine oil. I removed the second one. It was all wet on the threads. I suppose this spark plug well was full of oil.

What do you suggest I do?
Most likely the valve cover gasket?
Or a more serious problem?
How do I diagnose?

Thank you.
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Old 10-24-06, 01:42 PM
Join Date: Oct 2006
Posts: 23
Its a really common problem with DOHC cars. There are seals that are part of the valve cover gasket at the top of the tube that you should replace and although I can't tell you which engines specifically there are some that have tube seals at the bottom also. Both the upper and lower seals should come with the valve cover gasket.

Once you replace them remove the spark plugs and wash the oil into the engine with some carb cleaner. Make sure you crank it the first time outside because it can make a lot of smoke burning the oil off.

Old 10-24-06, 03:16 PM
Join Date: Oct 2006
Location: Wilmington
Posts: 4,219
Not sure I agree with the "wash the oil into the engine" comment. It is likely full if dirt and grit, which you do not want in your cylinders. Get as much out with a rag/paper towel as you can, the cleaner the better.
Old 10-24-06, 03:59 PM
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valve cover is leaking

happens all the time

spray it out good with some brake or carb cleaner or something and blow it out real good with compressed air before removing the spark plug if theres enough oil down there to get into the cylinder

replace VC gasket

good luck
Old 10-25-06, 04:44 AM
Thread Starter
Join Date: Oct 2004
Location: Florida
Posts: 358
Thank you. I am much relieved. The car has been a maintenance intensive vehicle, I mean major repairs.

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