Question about Goodyear 1964 Chevrolet C20 Pickup Accessory Drive Belt Goodyear

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1964 chevy c20 backfires through carbrator

I've replaced the plugs and wires checked the timing and vacuum advance is fine. Any other ideas of what it could be?

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Check timing first, if it's off set it.
If it is off and does not want to set, meaning it never stays where you set it, could be timing chain wear.

Posted on Oct 15, 2014

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That is a mechanical timing issue with the crank and the cam. IF the engine has a lot of miles on it, you may need to overhaul the timing gears and chain. If you rebuilt it, the timing is not right.

Posted on May 06, 2013

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What would make my 1999 Chevy Blazer 4x4 with a 4.3L Vortec engine suddenly start backfiring?


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Changed plugs wires cap rotor when I changed wires did one at a time so I would not mix up on they go onto rotor know van runs like s%#! checked to see if one wire was not on all the way but they all seem...


I do this for a living and have for 25+ years. To this day when I do it I have know idea how I messed them up but i do it some times. Even when I think i am doing them one at a time. Double check your firing order (see picture below). If that's not it check the Distributer cap & rotor for any cracks or flaws. Then check the plugs for being wrong or faulty such as cracks as well. that's all I can think about at this point for you unless you knocked a vacuum line off somehow and that's possible too. I hope this helps and good luck.


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1996 gmc jimmy wont start seems like advanced timing issue backfiring out throttlebody, replaced timing pick up, distribitor cap, crank sensor, ICM, when ignition conrol module replace the engine ran fine...


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