squeak, smoke, pop - Page 9 - 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 08-18-2007, 10:33 AM   #81
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What does the exhaust smell like.. you say extreme..but what is extreme?

With the car running..pull the oil cap off the valve cover..any suction or anything going on?
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Old 08-18-2007, 07:14 PM   #82
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to me it smells like oil, and i mean right at start up it overwelms you sometimes, if you put it in park and get out u can smell it bad
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Old 08-18-2007, 10:05 PM   #83
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We know very little about this engine and how it was previously treated.

It may have been overheated and done damage to the heads...warped

I might put money on a head gasket.
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Old 08-19-2007, 02:39 AM   #84
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but like i said it had new heads put on her about 8000 miles ago
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Old 08-19-2007, 11:23 AM   #85
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Quote:
Originally Posted by BillBoost37
What does the exhaust smell like.. you say extreme..but what is extreme?

With the car running..pull the oil cap off the valve cover..any suction or anything going on?
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Old 08-19-2007, 01:05 PM   #86
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The exaust smells like oil, its very strong.

I pulled the oil cap off and there is not suction going on.

Well yesterday I went to the cowboy game and on the way to the stadium, we ran into traffic, boy let me tell you we came to dead stops, 5 mph moving and my car was smoking like a halloween fog machine,the wind was blowing and pushed all the smoke down the side of the car and across the highway, then from a stop to a starting to move, I would lightly press the gas and it whould shove smoke out the tail even more and it would fill the road with blue smoke.
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Old 08-19-2007, 02:17 PM   #87
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Were the heads professionally installed

Why were the heads changed

Do you know the condition of the heads that were replaced

Check your PCV valve
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Old 08-19-2007, 03:30 PM   #88
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Does your car have a vacuum modulator for the transmission? If so, the diaphragm may be ruptured allowing transmission fluid to be sucked into the intake manifold. That would make a lot of smoke. To check it, pull the vacuum line from the modulator and see if it is oily inside.
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Old 08-19-2007, 07:42 PM   #89
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The owner at the time of this change is a mechanic, he installed them him self.

The heads were replaced when the engine became locked, for what reason i dont know, all he told me was that he cleaned carbon off the pistons when the engine became locked and replaced the heads, brand new heads were installed.

Vacumm Modulator for the tranny???????? wow I have no clue, would it cause blue smoke? Where would the modulator be located?
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Old 08-20-2007, 12:54 AM   #90
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Never mind. Smarter mechanics have informed me that your car doesn't have a vacuum modulator for the transmission. On my '95 it is located towards the front of the engine compartment with a vacuum line to the intake manifold. But I am told that '97 was the last year for them in the L36.
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