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Display Mesage #97859


Oily residue on the left rear spark plug area-
Written by tommikebanks14 on 10/11/2010 at 07:04 pm

When changing my spark plugs I noted that the left rear plug has a burnt oily
residue around the spark plug hole. I wonder where the oil is coming from?

Tom

Message Thread for message #97859

tommikebanks14
10/11/2010, 07:04 pm
Oily residue on the left rear spark plug area-
When changing my spark plugs I noted that the left rear plug has a burnt oily residue around the spark plug hole. I wonder where the oil is coming from? Tom

    rudyg1937
    10/12/2010, 01:19 am
    Oily residue on the left rear spark plug area-
    If it starts above the plug hole it is probably a cam seal leaking. A common, not critical, problem. Another possibility is it is not oil but is antifreeze from a leaking o-ring on the water pipes in the heads. Rudy

    delprincephil
    10/12/2010, 02:41 am
    Oily residue on the left rear spark plug area-
    I had an oily residue around the left front spark plug hole. It was from an earlier spark plug change where a slightly too large socket (still thin walled) was used to remove the plug resulting in a small hairline crack in the threaded metal