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Originally Posted by Hoopie
The title says it all, I found oil around 3 out of 8 spark plugs, all on the passenger side. I have a 2001 4.4 . What does this mean? Leaky gasket or worse? If it is the gasket how difficult is it to change out? Thanks guys.
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There are two possible sources of your leak. The first and most likely is that the valve cover gasket is leaking. It is not hard to replace but you need to take your time and follow the directions you can find on line exactly.
The second source is the o-rings that are around the bolts in the valve cover -- they get dry and then leak. They cost about $0.20 each and are easily replaced -- just make sure to not overtighten them or they will be crushed and leak worse.
If you look see traces of oil leaking down into the spark plug holes from the bolts then I would just replace the o-rings first. On my e39 540 (same engine) it was the o-rings...