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Wrenchbender Ret · 06-28-2016, 10:18 PM

Make sure there are no vacuum leaks. Try richening up the idle mixture a little.
I take it this is not a Calif. truck with a smog pump.

06-28-2016, 10:18 PM	#2
Wrenchbender Ret Registered User Join Date: Oct 2005 Location: Overland Park, Ks. Posts: 5,229	Re: Backfiring. Make sure there are no vacuum leaks. Try richening up the idle mixture a little. I take it this is not a Calif. truck with a smog pump.