My truck is backfiring from the exhaust and flames were coming out from the mufflers tailpipe. Recently rebuilt carburetor and need to adjust the electric choke adjusting screw and throttle screw,

Asked by Ajay1702 Dec 28, 2016 at 11:35 AM about the 1984 Chevrolet C/K 10 Scottsdale RWD

Question type: Maintenance & Repair

What are the correct settings for the
screws on the 4 barrel quadrajet carb and
the screws for the throttle and the screw
on the linkage for the electric choke. It
seems like it might be putting too much
gas in the carb.

3 Answers

F_O_R answered 7 years ago

I think your problem may be with the ignition timing.

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Andrew answered 7 years ago

If it truly is getting that much extra fuel adjusting the mixture screws won't do that. It really sounds like spark isn't coming at the right time

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