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Old 06-26-2022, 04:31 PM   #2
maxwedge
A990 racer
 
Join Date: Mar 2002
Location: Chestertown, New York
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Re: 02 Buick Lesabre Custom occasional hard start, backfires occasionally, manifold exploded

The harmonic balancer could have slipped around the hub, also crank and or cam sensor can be be bad. Google the other codes, plenty of info out there.
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