Another problem - Updated: Coil Pack - Page 3 - 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 11-23-2007, 05:44 PM   #21
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Old 11-23-2007, 07:54 PM   #22
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Haro is probably right on that link.

A compression test won't give you any indication of the problem. Tell him the coolant comes in from behind the throttle body after it burns though, and comes in with the incoming air. Not from a head gasket.

Read that whole article. Drain your oil immediately. Don't driv the car.


IF this is the problem, the sentence above MIGHT save your motor from destruction.
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Old 11-23-2007, 08:46 PM   #23
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oh he told me that if he did a compression test that if it went low that there was a leak somewhere. Its something tho beucase we changed the spark plug changed the wires but after reading that it explains the smoke and you can smell it once the car is runnging for a while. Is there any signs in the oil that will let me know if thats what it was?
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Old 11-23-2007, 10:15 PM   #24
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He'* assuming a head gasket/valve leak. Listen very carefully:

A compression check will NOT detect this leak. It'* leaking in way up by your throttle body, and coming in with the intake AIR charge. Have you been losing coolant? Does your exhaust smell like burning coolant? Is your oil milky? Look through the oil fill port. It may not show yet.

Is there coolant in the #4 cylinder? Does the plug smell like it?

Frankly, I wouldn't waste my time with a compression check. It'll tell you next to nothing on these motors. We don't blow head gaskets or valve seals. Those are basically the only two things that will tell you, other than ring/cylinder wall wear on very high mileage motors.

Did you drain your oil yet?
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Old 11-23-2007, 10:25 PM   #25
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my exhaust smelt like gas not coolant. there isnt any coolant on my garge floor or anything so im not sure im going to change it tomorrow to cold and dark for that now.
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Old 11-23-2007, 10:28 PM   #26
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I'm not looking for leaks. I'm looking for NO leaks, but your level going down.

IF this is the case (suspicion at this point), every minute there MIGHT be water and coolant in your oil could be costing you crank bearings. Just so you know.
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Old 11-24-2007, 12:42 AM   #27
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my coolant has been at the same level for a while. i had a radiator hose blow up a motnh ago and the coolant level after it was filled back up hasnt changed.
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