March 28, 2006i have a 69 k10 with a 350 that started to have backfire issues today. when you are driving at 55, the truck will stop accelerating even if you press on the gas pedal and then it will eventually release an insane backfire. it did this about 5 times during a 30 minute drive. the timing is at 6 degrees advance, dwell is correct, everything ignition wise has recently been replaced, and the carburator was rebuilt 3 weeks ago and until now everything has been running great. i noticed that the vacum line to the distributor from the carb was split around the carb end so i replaced that. Does anyone have any ideas as to what may be the problem or if that vacum line could have been the cause?
Forums : General Tech Questions : 69 chevy 350 backfire (1278 Views)
Subscribers : chevymetal
March 28, 2006First thing I'd do is go to the local auto parts dealer and get a rebuilt electronic distributor for, let's say, a 1974 Impala with a 350. You'll also need Coil, Cap, Rotor and wires. It's a direct swap, all you have to do is take the wire from the '+' side of the old coil and run it to the 'Bat' terminal on the new distributor. Throw away the point's distributor and old coil. High Energy Ignition (HEI) is way, way better. You don't get point bounce at high rpms and you'll never have to worry about resetting the points or if the condensor is ok. Once this is done try it again. You'll find much better performance, as well as better gas mileage and the engine will run much smoother.
October 16, 2011Big Frank pretty much covered it. Did you get this resolved?
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