Why is there oil in the spark plug well?
2003 Nissan Altima, 3.5, 110,000 miles.
Went to change the spark plugs after obd2 read a misfire in cylinder six, when i removed the ignition coil it was soaked in oil, as well as the spark plug when i removed it.I Wiped out most the oil and finished replacing the plugs. After starting it the first time white smoke was pouring out the exhaust for a min or so and stopped,and the car drove fine.
However today i started it up and it was misfiring again, worse than before and this time the check engine light kept flashing all the way home, p0306, cylinder six misfire. What could be causing oil to get in the spark plug well? Im assuming the oil is causing the misfire.
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check the relative spark plug , and related coil , if any one of them is not functioning the oil will be on the spark plug because thats a fuel which spark plug has to make combustion in the cylinder so if coil/plug is not working then , it will come over ignition area of spark plug , try changing ignition coil and plug
par Shabbir Awan
A leaking valve cover gasket will cause oil in the spark plug well average service time for most 4 cylinder cars like a nissan will be 100k -175k miles typically need to be replaced if it is really old and bad you will see oil leaking from the top of the engine down to the bottom of the block go under your car and if you see oil or dried up oil on the block its time for a new valve cover gasket, good news they only cost about $50 if you do it yourself but I would leave this one to a mechanic because if you drop something into your block it could be hard to get it, I work on my car and ive done this repair its a 4/10 difficulty level
par Amir Zamoum
Thank you very informative I really appreciate you
par Jeff Johnson
hi, i own 2009 Nissan Bakkie 2.0 16 Valve. i'm currently experiencing similar problem. tappet gasket was worn out and not sealing properly. Due to this problems oil started leaking into the Spark barrels and eventually got into
the engine wells. i managed to replaced the tappet gaskets and cleaned Spark plugs,Now bakkie runs smoothly without misfiring but my biggest worry is that the engine idles like diesel engine and sound like diesel engine even though its a petrol engine car. Please help...
If it is v6 engine I know what you can do ,do a scan first
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