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I changed the plugs and wires this weekend (NGK iridiums and 8.5mm Magnecors; yeah I know it doesn´t help performance on a stock engine but I like to upgrade when I can) and found a small quantity of oil pooled around one of the plugs. This was around the base of the insulator, not in the combustion chamber itself; the electrode and tip were dry and a normal looking medium brown. There was also a small amount of oil on the threads of the plug from the neighbouring cylinder.
What´s causing this? In the past few months, the valve cover gasket has started to leak to the exterior of the engine; could this be allowing oil to leak down to where the plugs are seated too?
Just wondering if I should be concerned.
Rob
What´s causing this? In the past few months, the valve cover gasket has started to leak to the exterior of the engine; could this be allowing oil to leak down to where the plugs are seated too?
Just wondering if I should be concerned.
Rob