i pulled a spark plug and there was oil all over the thread, i couldnt tell if there was any on the tip but the tip was dark colored... is there something wrong?
efnick
0.17 second search on google brought this up...
"this is often caused by piston rings or cylinder walls that are badly worn. Oil may also be pulled into the chamber because of excessive clearance in the valve stem guides, or badly worn valve stem seals. If the PCV valve is plugged or inoperative, it can cause a buildup of crankcase pressure. This condition can force oil and oil vapors past the rings and valve guides into the combustion chamber."
"this is often caused by piston rings or cylinder walls that are badly worn. Oil may also be pulled into the chamber because of excessive clearance in the valve stem guides, or badly worn valve stem seals. If the PCV valve is plugged or inoperative, it can cause a buildup of crankcase pressure. This condition can force oil and oil vapors past the rings and valve guides into the combustion chamber."
Does it smoke during start up?
If so look at the Valve guides.
I would also run some kind of carbon remover to clean your piston and combustion chamber
then do a compression test.It should be accurate if the carbon is off the valves.
If their is carbon on you valve to the point it wont seal it can cause a false reading on a pressure and leak down test.
Take your time and do it right one time.
If so look at the Valve guides.
I would also run some kind of carbon remover to clean your piston and combustion chamber
then do a compression test.It should be accurate if the carbon is off the valves.
If their is carbon on you valve to the point it wont seal it can cause a false reading on a pressure and leak down test.
Take your time and do it right one time.
oil over the threads is probably just bad valve cover o-rings. no need to jump to conclusions. all oil in the cylinder during combustion would be burnt and youd have large amounts of blue smoke out your tailpipe. oil on the threads is usualy just oil thats been sitting in the spark plug tubes goin onto the threads as you take the plug out.
what he^ said I have that exact same issue when I pull mine but aslong as it aint on the tip your all good
Was the oil at the tip of the spark plug OR at the other end???
If its not near the ground strap/tip then you have some bad valve cover tube seals that are leaking oil onto the other end of the plug....
If its not near the ground strap/tip then you have some bad valve cover tube seals that are leaking oil onto the other end of the plug....
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