Model A backfires coasting at any speed severely. Any ideas would be appreciated.

Asked by Nov 15, 2014 at 11:41 AM about the 1929 Ford Model A Base

Question type: Maintenance & Repair

It has been timed. Float has been adjusted once or twice. It's a wonder the muffler remains on the car. Thanks for any ideas.
Barry

3 Answers

115,875

Model A's always backfired, and with this garbage for fuel today it is worse, you can try rejeting the carb slightly leaner and running high octane fuel, add some lead substitute, might help but they all did it.

60

Also check for exhaust leaks in the manifold.

35

I had this trouble before with my 1927 Model A. It turned out to be a partly clog in the fuel tank. The tank was starting to clog up from the inside of the tank flaking up and falling off. Had the tank restored never had the problem again. Look into that. Hope that helps.

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