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Old 10-20-2018, 08:07 PM   #52
Fred K-OR
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Join Date: May 2010
Location: Stayton, Oregon
Posts: 3,793
Default Re: Terriable backfiring

If you happen to have access to another carb, you may replace the one you have on your rig and try another. Also make sure your carb gasket between the carb and intake manifold is not leaking. I had similar problem as you and when I used a different carb, problem went away. I am no expert on things but this worked for me. Or it may have been a leaky gasket between the carb and manifold. I found this gasket "wet" when I took it off.

I also put some MMO in the gas. I thought I may have a stuck valve and the reason for the MMO.

So don't know what solved the problem.
Fred Kroon
1929 Std Coupe
1929 Huckster
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