Think I blew the head gasket - 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 01-14-2007, 10:58 PM   #21
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Im pretty sure we installed them right. Im not sure if the bolts were over tightened b/c we didnt have a torque wrench. Heres a detail I left out. Right after I got it back together I took it for a ride. Probably a mile down the road it did the smoking thing again but never got hot. I kept driving and it stop smoking and ran normal again. Probably about 5 more miles down the road it when it really starting acting up and smoking and getting hot. I was easy on it at first but I did get on it alittle. I didnt replace the O-rings b/c I pulled it off as one piece. Oh yeah one more thing, its WHITE.
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Old 01-14-2007, 11:02 PM   #22
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Again, compression test. TB and SC outlet gaskets are also a possibility from what I am reading.
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Old 01-14-2007, 11:05 PM   #23
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I understand the outlet gasket but im alittle confused on how the TB gasket would cause this. That would be great if that all it was.
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Old 01-14-2007, 11:08 PM   #24
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There is a coolant path that runs into the TB. If it'* bad, it could spill coolant into the intake tract.

It'* just a speculation at this point though. I'd really like a compression test to rule in/out the head gaskets.
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Old 01-14-2007, 11:11 PM   #25
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Ok, I will try and get some compression checks done. Its best to pull all six at the same time right. I really miss the white one. It seems faster than the 94 ssei. Any thing alse to look at while im there.
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Old 01-14-2007, 11:14 PM   #26
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I don't know the proper procedure for a compression test, I've never done one myself.

Can't think of anything else at the moment.
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Old 01-14-2007, 11:18 PM   #27
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Thats ok, thanks for the help that you have given me.
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Old 01-14-2007, 11:39 PM   #28
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i've only done compression tests twice, and they weren't on bonnevilles...but the procedure was to pull them one at a time, and disconnect the distributor/coil pack so the car doesn't fire, but still turns over...that way it'* not as hard to mix up the firing order when reconnecting the spark plug wires....but pulling them all at once should work
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Old 01-14-2007, 11:57 PM   #29
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Is it a good idea to unhook the injectors as well?
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Old 01-14-2007, 11:59 PM   #30
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yeah i suppose, cuz then you'd just be pumping fuel right through your engine and into your cat, which isn't good, i suppose, but if you're only cranking for a few seconds it shouldn't cause any damage...i think..i'll look into that....
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