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03-24-2016, 01:02 PM
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Registered User
Join Date: Mar 2016
Location: Amelia va
Posts: 1
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1988 c1500 4.3 backfires through exhaust
I have an 88 c1500 Chevy with a tbi 4.3 I've replaced map sensor pcv Aic valve tps both exhaust air check valves and rebuild tbi replaced the egr valve and solenoid and cleaned out egr ports both injectors are good but it has a bad backfire through exhaust at hard acceleration downshifting or just reving engine it's got me stumped and is kinda aggravating
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