Question about 1995 Chevrolet C/K 3500

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Chevy 454 back fire

1995 fleetwood bounder backfire through throttle body on hard throttle would this be due to ignition timing and if so what is the correct setting. In Ireland we run 95 octane fuel. Engine 454 chevy v8 TBI

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Ignition timing is set by the computer as long as the distributor pickup point is within reason.

It could be running too lean. One of the TBI injectors may be sticking or not working (wiring or computer problem), or fuel pressure could be low.

Posted on May 21, 2009

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