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Old 10-05-2023, 10:14 AM   #7
nkaminar
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Join Date: Jan 2012
Location: Western North Carolina
Posts: 6,855
Default Re: Model A Lagging and Popping when Accelerating

Too lean. Open the GAV more for the first few miles.

You can put a can of injector cleaner in your tank. It will clean out the gum in your fuel system, including the carburetor. Buy that at your local auto parts store. It does not have to be specifically for carburetors, any injector cleaner will work, like Gumout.

Play with the ignition lever. Try advancing it more. Advance to the point where further advancing will not increase rpm or power then retard one notch. Use different ignition advance under different conditions. Retarded one notch in town or under heavy load at low rpm, advanced one notch when driving on a level road at a constant speed.
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