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Thread: backfiring when I let off on the gas after hard acceleration

  1. 08-31-2015, 11:36 PM #1
    LuckyWinner
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    backfiring when I let off on the gas after hard acceleration

    So when I gun it, then let off the accelerator it likes to pop and grumble...Timing? Too lean?? any ideas? 393, carb, no vacuum, ffr hooker headers. Sounds nice and mean, but worried it is bad for my engine.
    Owner MK4 7642RD, 393 stroker, Gordon Levy Super Alloy T5, HDX Clutch, Moser 3.31 3-link with disc brakes, 17" Bullit wheels, NT05's, Seat heaters donated by WarmSeats.com, door panels donated by Herbs Door panels.
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  2. 09-01-2015, 05:05 AM #2
    Jeff Kleiner
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    Leaking header or collector gasket is a likely culprit.

    Jeff
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