Think I blew the head gasket - Page 4 - 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 01-15-2007, 12:07 AM   #31
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from what i've found, you might as well disconnect the fuel injectors...it couldn't hurt anything, and it'* not that hard...only reason not to do it is if you're really lazy, like me, and will take the risk that the unburned fuels in your exhaust won't combust when the car runs again...that'* the best answer i can give
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Old 01-15-2007, 09:04 AM   #32
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Pull the injector power and all six plugs.
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Old 01-15-2007, 10:37 AM   #33
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Undue the 7mm bolt connector to the ignition module. This will illiminate both spark and fuel. remove one plug at a time, install the compression guage and turn the motor over untill the guage needle jumps about 4 times (this will ensure the cylinder has gone through all 4 strokes and you will be left with an acurate reading.)
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Old 01-15-2007, 11:29 AM   #34
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Pearl'* right.

Remove all six plugs

Disconnect or remove the fuel injector fuse.

Disconnect the ignition pack.
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Old 02-20-2007, 12:34 AM   #35
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Heres an update lets see if this makes since to anyone else. I have a decent knowledge of cars but this one kind of throw me for a loop. I took the car to my dads shop and one the mechanics said it was the Modulator Vacuum Valve on the tranny that was bad. He said it doesnt have any suction so the vacuuum lines that run up to the SC are sucking tranny fluid into the combustion chaber and thats whats making it smoke. It does make alittle sense just wondering if anyone has ever heard of this or is it a common problem. Thanks in advance Dennis
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Old 02-20-2007, 12:51 AM   #36
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It'* been known to happen, yes. Common? Not really, but not really uncommon either. What is uncommon is that there were apparently no shifting of other drive-ability problems with it.
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Old 02-20-2007, 01:29 AM   #37
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I was having some shifting problems with it. After the car sat for more than a 4 hours it wouldnt shift into any gear until it warmed up. Sometimes it took up to 30 min. I fixed that by putting brake fluid into the tranny and sometimes it still shifts hard. So this might be the problem.
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