oil on spark plugs?

Post Mon Sep 18, 2006 11:00 am

well it's like this i removed the sparkplugs to check them, and they had oil on the threads, one of them only had oil on the thread on the outer side and that one was the best, on some the oil has come to the electrode. any thoughts on this? where does this oil comes from?

Post Mon Sep 18, 2006 12:11 pm

What engine?

Andrew

Post Mon Sep 18, 2006 2:52 pm

m20 320i l-jetronic

Post Mon Sep 18, 2006 6:19 pm

generally if theres excessive oil on the plugs isnt that caused by worn piston rings or valve stem oil seals allowing the oil to seep through?

Post Mon Sep 18, 2006 7:43 pm

the thing is that the oil on some of the plugs is, only on the out side on the thread, not on the electrode or where the spark plug is is inside the engine...

could this be leak from the valve cover cause i recently changed head gasket and i forgot to buy a new gasket for the head cover and used the old one?...

Post Mon Sep 18, 2006 7:44 pm

kirils wrote:the thing is that the oil on some of the plugs is, only on the out side on the thread, not on the electrode or where the spark plug is is inside the engine...

could this be leak from the valve cover cause i recently changed head gasket and i forgot to buy a new gasket for the head cover and used the old one?...

From what you say that is what it sounds like.