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G3GM 1973 to 1977 A-bodys. Chevelles, Monte Carlos, El Caminos, Laguna, 442, Cutlass, Malibu, GTO, LeMans, Century, Regal, Grand Am, Grand Prix, Sprint, Gran Sport, Can Am, Hurst-olds, and other 73-77 A-bodies


chevelle backfiring at acceleration

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ant7377
Brainstain
JiMi_DRiX
BlackChevelleSS
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G3GM :: G3 Tech :: Engine & Driveline

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chevelle backfiring at acceleration - Page 2 Empty Re: chevelle backfiring at acceleration

Post by pila Tue Nov 20, 2012 11:22 pm

Good call by 74chevelle. A quick way to check for vac leaks is with a propane torch (not lit of course !!). With the engine idling, run the torch around the intake & carb gasket, and around any vacuum lines from the engine. Leaks will cause idle speed to rise if they are enough to affect the engine.
Check the torque on the carb base nuts.......

As to the distributor, the Pertronics conversion kit is popular these days & works good in the old point type distributors, and you can keep the cap & plug wires like they are now.

pila
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