oil smoke - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 04-28-2008, 12:05 PM   #1
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:( It all started about 3 months ago .my supercharged 96 bonne started smoking.it smokes when i stop at idol,it smokes when i rev it up,but no smoke at crusing or morning start up, or until it gets warm .i am wandering if iit has something to do with vac?and i am losing oil this is very embarrsing. any help ? the engine is a rebuilt 3.8, 3 years old recon engine from advance auto. when it started it done it in about 3 days if you need any more info please email me
@moore4158bellsouth.net
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Old 04-28-2008, 12:23 PM   #2
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Is it blue oil smoke for sure? White smoke? Black smoke?

Since it does it at idle when it'* warm, have you ever tried to smell it for an extra identifyer?
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Old 04-29-2008, 04:45 PM   #3
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it is blue for sure and it smells like oil
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Old 04-29-2008, 04:52 PM   #4
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My 95 does this too and it is oil for sure. My intake gaskets were done last summer and it was not doing it then. I did notice that after switching the cat two weeks ago it is not as bad though. It dosent use that much maybe a quart a month or less. I will follow this thread closely.
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Old 04-29-2008, 05:13 PM   #5
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Some of these guys are better at diag. your problem than me, but since I'm here... have you tried replacing the PCV valve? Running a compression check might tell you something. (Piston rings?) Valve guides/seals usually smoke after sitting shortly after a run and then starting up.
Then, you get the big old puff of smoke >
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Old 04-29-2008, 06:06 PM   #6
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I am not sure come to think of it if I replaced my PCV but that would definately do it. Thanks for the tip and I will try it.
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Old 04-30-2008, 11:07 AM   #7
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For some reason I'm finding this thread confusing.

Is this issue on your supercharged Bonnie? The 96?

Where is this oil coming from? Can you actually see the smoke cloud under the hood?

You could be suffering from worn out valve cover gaskets. It'* common for them to leak on the L67 (Series II Supercharged) engine.
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Old 04-30-2008, 11:39 AM   #8
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Quote:
Originally Posted by vital49
For some reason I'm finding this thread confusing.

Is this issue on your supercharged Bonnie? The 96?

Where is this oil coming from? Can you actually see the smoke cloud under the hood?

You could be suffering from worn out valve cover gaskets. It'* common for them to leak on the L67 (Series II Supercharged) engine.
Yes the author is asking about his SC 96, and it sounds like it is coming out of the tailpipe like my 95 SE is.
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