4.3 Backfire - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 08-12-2001, 08:47 AM
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4.3 Backfire

I have a bad backfire in Chevy 4.3 Did compression test (OK) New EGR valve. I have to advance timing to get to start. Bad timing gear?


Thanks for any help, Russ

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post #2 of (permalink) Old 08-12-2001, 08:55 AM
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Re: 4.3 Backfire

Did this problem just come up or has it been around and just goten worse?
After doing a tuneup on my 89 I had replaced the plug wires and thought I had them right, wrong I had about half of the wires on the cab in the wrong spots, didnt want to start at all with maybe 3 cylinders firing when there suposed to.

just a thouhgt other than that I dont really know what you should check


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