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Old 03-14-2015, 09:05 AM   #11
65standard
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Join Date: Dec 2014
Location: Coal City, IL
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Re: Help diagnosing a rough running 292

Bad spark plugs will be weak or not fire under compression. They can surely cause a backfire or misfire.
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1953 Chevy 3100 392 Hemi w/727 & 9” Ford
1985 Chevy C/10 6.0L 4L80 373 locker
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