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.

L27 Coolant Loss???

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Old 05-10-2005, 12:21 PM
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Lower manifold gaskets are between the LIM and Heads. You be the judge

Do yourself a favor, and feel around under your waterpump after the car cools down next time. See if there'* any coolant coming from the weep hole.
Old 05-10-2005, 01:36 PM
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What about the plastic elbow on the manifold?
Old 05-10-2005, 01:40 PM
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Should be replaced, but usually when those little suckers go, they GO.
Old 05-10-2005, 05:10 PM
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Originally Posted by willwren
I've never seen a Series 1 upper intake manifold FAIL. The gaskets may leak occasionally, but that'* not the intake itself.
I HAVE
Old 05-10-2005, 05:26 PM
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Originally Posted by GAMEOVER
Originally Posted by willwren
I've never seen a Series 1 upper intake manifold FAIL. The gaskets may leak occasionally, but that'* not the intake itself.
I HAVE
That'* one.
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