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Jim Powers · 08-04-2018, 11:02 AM

It may be a dirt particle or a small flake of rust that has made its way through the fuel bowl and is partially blocking the bottom of the main jet causing the engine to run lean.

08-04-2018, 11:02 AM	#12
Jim Powers Junior Member Join Date: Jun 2010 Location: East Kingston, NH Posts: 17	Re: 1929 model a back fire It may be a dirt particle or a small flake of rust that has made its way through the fuel bowl and is partially blocking the bottom of the main jet causing the engine to run lean.