Loud Knocking Sound? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat
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1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 10-13-2009, 12:04 AM   #11
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duncan is on a distinguished road

Our 89 Bonne did the same thing increase the engine speed just a little and the noise goes away
tryed to find the knocking with a stethascope but no way put a new hb run like new duncan
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