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Old Dec 9, 2020 | 09:32 AM
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Default Chevy 47

92 corvette idlers fine driving down the road the car pops back through the throttle body replaced the distributor with a MSD distributor replaced the coil with MSD coil still pops back NEED HELP! thanks
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Old Dec 9, 2020 | 10:48 AM
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From: Plantation Florida USAF(Retired) 1966-1990
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Have you checked for codes, could be lot of the things creating the problem, and throwing parts might not be a good thing.

Just throwing something to look into the ECM or fuel injector, can cause the problems you have posted.

When my C4, was doing what you said it was fuel injector, after it was diagnose and I replaced all my injectors.

I owned L98, which was known to have injector problems.

Good luck.
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Old Dec 9, 2020 | 11:37 AM
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Check fuel pressure.

When it's backfiring, what is the tach needle doing? Does it's action correspond with that the engine is actually doing? Or is it "going haywire"?
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