There are o-ring type gasket that go around each spark plug well in the valve cover gasket. This is a situation where oil tends to also fill the plug well around the spark plug where it goes into the head.
I am including a diagram of the valve cover so you can see where the spark plug ghaskets would go around each spark plug.
You just need to replace the valve cover gasket if this is the case. It should come with the spark plug o-ring seals.
If you think it might be something else or you have any more questions, please let me know and I will get back to you ASAP.
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Wednesday, November 9th, 2011 AT 12:55 AM