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Oil in spark plugs....WTF whats wrong?

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EvilAWD

15+ Year Contributor
58
0
Aug 13, 2004
thermal, California
hey fellas i have a 95 gsx anyway i changed the turbo on my car because i was smoking..bad seals on the turbo anyway i got a new turbo and installed it. with that i also installed a fuel pump. much to my luck i get smoke whenever i gun the car. i have a type s that is vented to the atmosphere and the fuel pump so im thinking thats why it smokes. Anyway i was going to change my spark plugs and i have oil all over the spark plug in the bottom. whats wrong? i did a compression check and it came out to 150 all the way through can you guys help me whats wrong before i spend hundreds of dollars :cry: to figure it out thanks. OMG
 
i should also tell you guys that i never had any type of misfire or anything. everything was working perfectly fine besides the whole smoke thing. i had the ngk bpr7's on there.
 
If you have oil on TOP of the sparkplug in the hole then that means you need to change some small rubber gaskets under the valve cover.

Pull the valve cover off and you will see exactly what im talking about. Theres 4 holes in your valve cover so those holes need to be sealed from your oil from you valvetrain area. I just changed mine,.
 
actually i just found out whats the problem, i didnt have oil all over the spark plug. it was oil that was in the bottom where it creates spark. anyway because i had the old turbo that was going out, it would throw out oil into the intercooler piping and ran up to the throttle. so it would end up there in the bottom of the spark plug. this is what road race engineering told me. anyway i replaced the turbo and so im going to put the new spark plugs in. hopefully after a couple of days there wont be any oil all over them. my compression was at 150 all the way through and oil was all over all of the spark plugs so im pretty sure that was the problem. thanks anyways :notgood:
 
Hey, I was wondering if anyone has ever had oil on the bottom of only one spark plug. Its the closest one to the tranny. All the rest were fine except that one had oil on it what would cause that, and the compression is fine at least it was not very long ago.
 
Oil blowby on your piston ring.

**edit** Wow, it's nice and early and that was a crappy explination even to me.

Your piston ring is allowing oil to sneak past. Start saving money. When it's time to replace it you might want to replace pistons/rods/bearings all at once. Good time to get alot of the bigger stuff done since you have to pull them anyway
 
Are you sure? I hope your wrong but your probably not. It wasnt soaking wet, it was just a LITTLE bit on the threads. Does that make any difference?
 
Is the car smoking? if so, under what conditions? Perform a dry and wet compression test and post back numbers.
 
Nope no smoking what so ever, when I first put the new plugs in it smoked for about 5 mintues then never did it again. I feel like an idiot for not chaging the plugs sooner they were so fried I cant believe my car was even running.
 
i'm having the same type problem with my car. here's my deal. i have a 90 six bolt fully built, with manly valve train and HKS 272's. the bottom end is .020" over with ross racing 8.3:1 compression pistons, moly rings, eagle rods with arp everything. t-4 turbo at 15 psi with 550's ans 3" mas and translator.

when i pull up to a stop light i get smoke. now, it doesn't do this all the time. sometimes it's bad, sometimes not to bad. when it's bad, it's pretty bad. bad enough to know that people are looking at my car like "wtf is wrong with that thing." if it's bad it seems that if i rev at like 2k for a couple seconds it seems to clear up. when it's not so bad i can just see some light wisps going by the car, or i can just smell it barely. i did a compression test and everything was about high 150's to mid 160's. the rings are gapped at .019" and .021" respectively. when i pulled the plugs i noticed oil on the threads of cylinder one, and very lightly on cylinder 2 threads. now one other problem that could be contributing. is this...i have a greddy type-r bov witht ths stiff spring. it doesn't open well under 15 psi from what i understand. theres no oil in my intake piping. i'm just flat out of ideas. if i have to re-ring it, i don't care, i'll get it done in a weekend or so, but this is my problem, and i deffinatly need some help diagnosing it. i was also considering wether or not the low vaccuum from the cams is keeping the pcv from opening? sorry for the length, but i'm at my wits end. thanks :dsm:
 
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