I need help oil on my spark plug

[drifter183]

can any 1 help me out? i took out my spark plug out of my #1 cylinder and oil was driping off it my friend told me there is a gasket around the spark plug and i need to chang it but some 1 else told me it could be my piston ring what do u think it could be???

thanx

[big jon's 240]

Usually a oily plug means you have bad rings or bad valves/ valve seats. Does your car smoke while its running? There is no "gasket" around you spark plugs. What do the rest of your plugs look like?

[1dollar240]

If you have a SOHC, then this could be a problem, if you have a DOHC, then its probably just an o-ring, take off the valve cover and check it out.

[drifter183]

all my other spark plugs look fine. Were is the o-ring at is it the 1 around the spark plug? thanx for your reply's

[drifter183]

oh ya and it dosent smoke while running.

[1dollar240]

It would help us all answer your question if you would answer whether or not you have a 89-90 or 91+ 240sx

[drifter183]

its a 1991 240sx se

[1dollar240]

ok, then its most likely just the simple o-rings that hold oil out of the spark plug socket, its kinda hard to explain but if you just pull the valve cover off then you will see what I'm talking about. it seals the valve cover to the head around the plug.

[Gladimor]

Well then it's not that bad of a leak, hopefully it's nothing more than a bad piston ring try upgrading to a higher weight oil, it will slow the process until you can put the engine under the knife. Also there is a product that napa sells called seafoam, you can add it to your crankcase and it helps seal the pistons.

Peace

[stickgoat]

Valve cover gasket... replace it.

[Turb0wned]

buy a valve cover gasket thats your problem i had the same thing and i just finished replacing mine it was in the #3 spark plug that was all it was the gasket was only $15

[Unnatural]

Usually a oily plug means you have bad rings or bad valves/ valve seats. Does your car smoke while its running? There is no "gasket" around you spark plugs. What do the rest of your plugs look like?

There is a "gasket" around the spark plug on DOHC engines. It is actually around the base of the spark plug 'tube' in the valve cover.

Like the others have said these O-Rings can leak on higher mileage cars and can make a real mess. Just buy a replacement valve cover gasket set (make sure it includes the tube seals). Remove the valve cover and you'll have access to the tube seals to replace them.~Brendan

[Nismo_Freak]

Simple fix... get some rotary plugs!

Hahha...

J/k... replace that gasket.