Back firing

1975 CHEVROLET SILVERADO
89,000 MILES • V8 • 2WD • AUTOMATIC
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JDFOOL
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I have a 350 engine. Eddle Broke Carb and manafold. I was experiencing back firing as I accelerate, so I changed all spark plugs and re shot the timing. Car is still back firing. What else should I check?
May 7, 2011 at 1:26 PM
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WRENCHTECH
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Backfiring is caused when fuel ignites at the wrong time. Check the firing order, distributor cap, coil and timing.
May 7, 2011 at 2:38 PM
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JDFOOL
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when fuel ignites at the wrong time? Are you saying that to much fuel is entering the Carb? Maybe I should minimize the amount of pressure entering the Carb?

Im running a Holley Fuel pump, also I have a gauge on that fuel line running to the Carb, what do you think the amount of pressure should be? Its around 5 1/2-6 now.
May 7, 2011 at 2:58 PM
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WRENCHTECH
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What? How did you get that from what I said?

Ignites at the wrong time...... meaning timing, crossfiring or fuel that didn't ignite on the proper ignition cycle.
May 7, 2011 at 3:33 PM