Re: engine backfire when slowing down
It's virtually impossible for a leaking power valve or economizer diaphragm to drain the bowl on a Holley 4000, 2140, 885F or ant teapot style Holley carb, 2 or 4 barrel.
Completely different design than the other Holley power systems. (like the Holley 94 type carbs).
Sal
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