Loud Knocking noise.... - 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 08-15-2004, 05:45 AM   #1
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Default Loud Knocking noise....

I need help....When I start her up there is a loud knocking noise and when I hit the gas it get'* louder and faster.....Shops keep saying it'* my crankshaft.....but DAMN!!! That'* a hell of a fix!!
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Old 08-15-2004, 08:59 AM   #2
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mmm...knocking at idle? Thats a hell of a rod knock if thats the case but that usually shows up around 2500rpm. its a bottom end problem though. sorry
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Old 08-15-2004, 10:03 AM   #3
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Mine turned out to be harmonic balancer.
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Old 08-15-2004, 10:06 AM   #4
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reeheeheeaallly hehe, you lucked out for sure. I'm kind of going on the assumption that his mechanic has it narrowed down decently.
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Old 08-15-2004, 12:51 PM   #5
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Default Re: Engine knock

Mine turned out to be a connecting rod bearing - hence the rebuild.
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Old 08-15-2004, 03:37 PM   #6
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yeap it could be the crankshaft thats why i am tearing her down soon
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