Oil on top on spark plug
#1
Oil on top on spark plug
I recently changed my plugs myself at 105k and noticed some oil on top of and looks to be around the hole the plug goes in. All other plugs look normal. Could this be from a faulty valve cover? No signs of oil loss or burning either thanks for any suggestions
#2
I had this on one of my older Maximas....turned out to be the O ring type gasket on the spark plug tube....can't remember the correct name at the moment as it was quite a few years back.
#5
They also can be difficult to get out and install back properly, pay attention on how they sit on the spark plug tube.
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