Thread: backfire.
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Old 04-03-2019, 05:57 PM   #15
30 Closed Cab PU
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Join Date: Aug 2018
Posts: 2,332
Default Re: backfire.

Yesterday got my truck back from a Model A shop, turned it off, and within a couple of seconds backfired through he exhaust. Got it running again at idle , GAV set full lean,advance lever up - was not running right. Got out and noticed black smoke out of the exhaust. Backed the idle mixture screw out a couple of turns until it started running better - issue solved.


Exhaust was loading up on unburned gas, and was ignited by the hot exhaust manifold.
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