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Old 04-16-2024, 08:05 AM   #8
Seth Swoboda
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Join Date: May 2010
Location: Southern Illinois
Posts: 3,833
Default Re: Flat head back firing pop. pop over and over

If the choke cleared it out, that would indicate a lean situation. I wonder if you have a vacuum leak or a valve(s) that stick. We might need more information.

How well does it idle?
Does pulling the choke out clear up the situation?
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