Engine knocking noise?

1997 BUICK PARK AVENUE
190,000 MILES • 6 CYL • FWD
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SHANE97PARKAVE
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I recently changed my belt tensioner due to a skreetching noise, after i replaced the tensioner and put on a new belt i hear a knocking, what could this be?
Mar 26, 2011 at 8:54 PM
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ASEMASTER6371
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Good morning,

Can you upload a video of the noise so I can hear it?

A common knocking noise is the crankshaft pulley. The rubber wears out and the pulley moves back and forth.

https://www.2carpros.com/articles/engine-noises

I attached the procedure for you to view.

Roy
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Sep 7, 2021 at 4:58 AM