mak89

iTrader: (6)

So today I decided to try to do a compression test on my cylinders. Before pulling out the spark plugs I noticed 2 out of 6 had oil around it in the valley. Pulled them out and those 2 spark plugs where drenched in oil. Looked inside the spark plug hole and saw excess oil, and a mirror reflection. Car has 155k miles on it.

Did some research and read that oil in the spark plug valley is often a indication of a worn valve cover gasket.

Question is, is the excess oil in the spark plug 'hole' (not the valley) also caused by the worn valve cover gasket?

StiCk3

iTrader: (5)

the oil that leaks out of the valve cover gasket will settle down in the spark plug holes. When you pulled out the spark plugs, more than likely the oil that was pooling up there spilled into the combustion chamber. Any reason for the compression test though?

mak89

iTrader: (6)

nvm, it is the gasket and spark plug o rings.

justin1642

iTrader: (7)

Make sure you clean the spark plug hole good because if you leave any in there it will cause your new plugs to foul out again.

bugjug

Doubt that, although you are right, you should clean out all of the oil. Plug is not going to foul out specifically because of oil from the valve cover gasket.

justin1642

iTrader: (7)

If there is oil on your plugs they will not work right. I've experienced this in an old mkiii supra.

cartmill

iTrader: (3)

did you say spark plug o-rings?

mak89

iTrader: (6)

meant spark plug grommet

cartmill

iTrader: (3)

there is no spark plug grommet.

bugjug

sure, but you aren't going to get oil on the plugs due to a bad valve cover gasket

justin1642

iTrader: (7)

Yes you can. It leaks from there into the valley and settles in the plug holes and your plugs foul out causing your car to not run or run right.

kdick91

This is pretty much right. Oil is above the spark plugs. You pull the plugs out. Due to gravity, the oil will run, via the spark plug hole, into the cylinder. This drenches the threads and causes oil to get on everything. If you burn oil like this it can foul a plug QUICKLY. If you manage to get as much of it out as possible, you should be okay. If I were you, I'd change those gaskets ASAP (mine was fracture in SIX places when removed, missing in one place) THEN after excess oil and grease burns off (maybe 1000 miles) change the oil again and change your plugs. This is pretty much as safe as it gets.

cartmill

iTrader: (3)

that oil will burn off of the plug tip in about 2 seconds after you start the car.

mr/griffin

true and not true, the amount of oil is a factor and engine temp as well. this happend to my ge after i bought it the guy thought the motor was shot i snickerd and so did he when i bought it.i changed the plugs vcg and drove past his house loling

and the plugs do have a grommet please stop misinforming people (whoever said it)

cartmill

iTrader: (3)

i said it.

misinforming people?
where did you put a grommet when you changed your spark plugs?


also, where are you in tennessee?