What is an upper intake failure???? - 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 01-10-2006, 05:07 PM   #1
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Default What is an upper intake failure????

I need to know specifically what happens when the upper intake fails and what happens to the engine itself. Thanks guys I have never heard of an upper intake failure so I am curious.
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Old 01-10-2006, 05:19 PM   #2
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http://www.bonnevilleclub.com/techinfo/?article=85

Information in Techinfo to start.
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Old 01-10-2006, 05:28 PM   #3
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In a nutshell, it is when the plastic thing on top the engine stars leaking antifreeze into the engine. If you start losing coolant faster than normal, or if you notice antifreeze in the oil (this will show as white creamy stuff on the distick)

A common problem for the 3800 series II engines.
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Old 01-10-2006, 05:35 PM   #4
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Quote:
I'm 19 years old and this is my first car. It is a White 1992 Bonneville SSE
Judging by this line in your sig, you're immune. In fact, you may not even have a plastic upper at all (started in 92 1/2), and even if you did, this problem affects 95 and newer L36'*. Not the L27.
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