Spark Plugs

PropNut

Cadet
Joined
Jul 8, 2002
Messages
24
What does it mean when I pull my spark plugs and they are oily? I have a four cylinder and they are only oily on the number one and two cylinders. On three and four, they are fine. Thanks.
 

khickey446

Cadet
Joined
Jun 14, 2003
Messages
8
Re: Spark Plugs

Have someone do a leakdown compression check on your engine. It sounds like your piston rings are leaking oil past them but the compression check will confirm that. With this kind of check you can tell where the leak is by listening to where the air is coming from.
 

snapperbait

Vice Admiral
Joined
Aug 20, 2002
Messages
5,754
Re: Spark Plugs

Leaking valve stem seals are also a strong posibility...<br /><br />I agree with TheHick on doing the leakdown test...
 

PropNut

Cadet
Joined
Jul 8, 2002
Messages
24
Re: Spark Plugs

If my rings are leaking oil, what other problems will this cause? Loss of hp? Engine damage? Improper spark?
 
Top