coolant in cylinders - Page 2 - 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 08-06-2006, 11:39 PM   #11
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You need to go deeper than the upper intake manifold(UIM). Remove the lower intake manifold (LIM) too and change out the LIM gaskets for the new aluminum ones. The LIM gasket failure is just as common a problem as the perforated UIM as discussed in the techinfo article linked above by Archon.

This one:

http://www.bonnevilleclub.com/forum/...e=article&k=38

Pleas read this. It will explain the problems and lay out your options.
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Old 08-07-2006, 11:49 AM   #12
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Default Re: Update-UIM gasket replaced, oil in cylinders

Quote:
Originally Posted by jds
Replaced UIM gasket yesterday
Did you only replace the UIM gasket, or the gasket and the entire UIM?
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