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Old 06-24-2008, 11:30 PM
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350 chev wont start, just backfire

G'Day hoping someone can help me with little issue im having with my vehicle.

Engine is backfiring through carby or exhaust instead of starting. Been thru timing and can't find a fault (maybe I missed something).

Vehicle setup:
350 chev with mild cam
750 double pumper (holley)
Procomp electronic distributor
MSD coil

This problem has started since fitting a NOS plate kit, could the issue be with this????

Thanks in advance for your time helping me out.


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Old 06-25-2008, 12:01 AM
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Backfiring through the carb or exh sounds like a timing issue to me. Did you change anything timing wise when the nitrous kit was installed (like rotating the distributor)? Have you verified your ign timing with a timing light? Check over you vacuum advance if equipped. Also check the mechanical advance. I was thinking about all the basic timing issues that might cause this.
Hope this helps some
BigBuick Joe
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Old 06-25-2008, 01:09 AM
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Check the NOS plate for a big hole missing a plug. That's just a guess. Or maybe a big hole in the rear base of the carb that's missing a connection or plug.
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