oil in combustion camber

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RPS13 DRIFTER
Posts: 104
Joined: Thu Dec 27, 2007 9:02 pm
Car: S13 Hatch SR'D

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my spark plug is covered in oil and my engine is missing and smoking out of the exhaust (white smoke)and smoke is also coming out of the t on my valve cover.i think its a piston ring failure i havnt comprestion tested it yet.what should the numbers be? 120 130 PSI?could not having the t routed back in the intake pipe before the turbo cause this by bad crankcase vent.?i had blow threw the dipstick before this happened.



duffman1278
Posts: 6816
Joined: Sun Apr 01, 2007 3:09 pm
Car: 89 240sx Hatch, the wildcats!

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White smoke from the exhaust is most likely HG, and oil in the spark plugs is your seals gone bad on the valve cover.

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Hijacker
Posts: 14373
Joined: Wed Aug 13, 2003 4:57 am
Car: '92 240sx Convertible
'94 F-150
Location: Fredericksburg, VA

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It could be bad valve stem seals. But given that you had a pressurized crank case like you described, I'm going to have to go with bad rings. When you run your compression test, you should see anything from 130-150 depending on how used your motor is.

RPS13 DRIFTER
Posts: 104
Joined: Thu Dec 27, 2007 9:02 pm
Car: S13 Hatch SR'D

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so if i get a really low number from that cylinder then i need to replace the rings

codyace
Posts: 1195
Joined: Tue Apr 26, 2005 7:22 am
Car: S14 w/redtop
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RPS13 DRIFTER wrote:so if i get a really low number from that cylinder then i need to replace the rings
In the perfect world? Yes.

In the realistic world: You probably have bigger issues (piston failure).

See if you have oil pumped through your intercooler pipes and the sort as well

RPS13 DRIFTER
Posts: 104
Joined: Thu Dec 27, 2007 9:02 pm
Car: S13 Hatch SR'D

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ok thanks


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