school boy

ok, i see some bad information here:
1) the oil was on the electrode therefore insde the engine. valve cover gaskets will not fix this. A few ways, like mentioned above, oil can get here is bad rings, valve seals and/or guides, or through the valve cover breather hoses but not likely since the oil would have to travel through the tb, intake manifold and heads. my guess, if the the 3 cylinders are on the same side, is a head gasket.
2) if you installed the 90mm maf without a change in the ecm, put the stock maf back on. the ecm is tuned for the stock maf and in a different one iss put on, it the ecm doent know it.

Stevo86

I was referring to oil in the spark plug well not oil in the cylinder. Oil in the plug well can cause carbon trailing just like water and cause the plug to short out into the head instead of firing properly. That is cause by bad valve cover gaskets.

school boy

that is true but we're not talking about the porcelain part of the plug

Stevo86

Yeah I'm on board with ya, that's why I was trying to get clarification about whether or not it was inside the cylinder or the well. Since I'm not real positive how he was seeing oil inside the cylinder. It's been my experience that if your engine is not smoking and you pull a plug with an oily electrode, it's because you got oil on it on the way out.

school boy

its deffinently an odd situation.