Kinda OT...Oil covered spark plug.... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72gmcshorty · 01-21-2004, 11:13 AM

I changed the spark plugs on my car (86 firebird) and found one heavily covered in oil (around the threads and towards the spark end of the plug). I didn't see any oil on the outside of the plug hole. All three spark plugs on the drivers side were also burnt at the bottom of the ceramic part of the plug. Is there a problem here? Maybe time for a rebuilt head? The car has 228,000kms

cdowns · 01-21-2004, 11:44 AM

as long as it's running i wouldn't mess with it putting a new/rebuilt head on a high milage engine just seems to cause more problems than it's worth sealing up the top end just increases blowby on the cylinder to piston ring seal

*67Fleetsidedream* · 01-21-2004, 04:09 PM

Sounds to me that the spark plug with oil on it is not firing. There should not be liquid oil, but burnt oil.

**nightmare** · 01-21-2004, 04:50 PM

like 67Fleetsidedream said, it should be burnt oil. if it was idling rough, running rough, getting poor gas mileage, there was a possibility that the plug wire came off. is that why you were changing plugs?

01-21-2004, 11:13 AM	#1
72gmcshorty Registered User Join Date: Jul 2001 Location: North Delta, British Columbia Posts: 1,344	Kinda OT...Oil covered spark plug.... I changed the spark plugs on my car (86 firebird) and found one heavily covered in oil (around the threads and towards the spark end of the plug). I didn't see any oil on the outside of the plug hole. All three spark plugs on the drivers side were also burnt at the bottom of the ceramic part of the plug. Is there a problem here? Maybe time for a rebuilt head? The car has 228,000kms __________________ 1992 Gmc 2wd 1972 Chevy Blazer 2wd

01-21-2004, 11:44 AM	#2
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	as long as it's running i wouldn't mess with it putting a new/rebuilt head on a high milage engine just seems to cause more problems than it's worth sealing up the top end just increases blowby on the cylinder to piston ring seal __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

01-21-2004, 04:09 PM	#3
67Fleetsidedream Wiseass secured himself a BAN Join Date: Nov 2000 Location: MOON!!! Posts: 2,282	Sounds to me that the spark plug with oil on it is not firing. There should not be liquid oil, but burnt oil.



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