Question for you car mechanics out there

[Buehler445]

Originally Posted by BigRichard

Bump... Doing my mom's spark plug in a 2011 Nissan Murano with a 3.5 L engine. One of the spark plugs had a lot of oil on it but it hasn't shown any symptoms like burning smoke or anything like that. Suggestions here? Change the valve cover gasket maybe? How would I know if that was actually the issue without pulling the plug again? These are the back plugs so you have to remove the manifold to get to them... not a simple task.

Where was the oil? Was it on the spark side inside of the cylinder or outside suggesting an oil leak somewhere else.

If it is in the cylinder it's probably the rings. Is it missing/Running Rough?



This is a plug out of a non-firing cylinder out of one of my irrigation motors. You can see it crammed oil into the gap of the plug.

This is bad. This needs an overhaul. Sell the car before you get this. Chevy 350s aren't too expensive to overhaul. This would get ugly.