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Old 10-19-2018, 04:53 PM   #44
Tom Wesenberg
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Join Date: May 2010
Location: Mpls, MN
Posts: 27,423
Default Re: Terriable backfiring

My stock engine has only 50 PSI on all 4 cylinders, but runs strong and smooth.
10 years ago all the bad backfiring was caused by poor contacts in the repro switch.
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