1982 Chevrolet Silverado backfiring through carb

JERRY BARNARD

MEMBER
1982 CHEVROLET SILVERADO
65,000 MILES

Okay im having problems with my truck backfiring through the carb. I know that ignition timing can cause this so I adjusted the timing as close as I could get to the engines preffered timing because it does have a full race cam the truck was running well it then backfired through the carb this time catching the carb on fire. Im not sure if it is the vacuum advance or what it has had a complete tune up. The engine is a 350 chevy I have been told that it is in the carb

Sunday, June 9th, 2013 AT 4:48 PM

2 Replies

ASEMASTER6371

MECHANIC
52,796 POSTS

Lean mixture, mis adjusted valves, timing are some of the many reasons for this.

It could be the accelerator pump not working in the carb causing the lean condition.

Roy

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Sunday, June 9th, 2013 AT 5:25 PM

JERRY BARNARD

MEMBER
2 POSTS

Thank s asemaster6371 ill look into checking the mixture and the valves being mis adjusted as well as the timing again thank you for the response. I am looking into a new carb so any carb problems should be fixed

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Sunday, June 9th, 2013 AT 5:48 PM