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Terry,OH · 05-05-2021, 04:17 PM

Your engine seems to have a lot of valve lifter noise. IMO I would have Charlie Schwindler check out the fuel pump and get the pressure down and not install a pressure regulator. NAPA sells fuel filters for the glass bowl pump. Ask Charlie to install one. Remove the Carb input valve and clean. Then see if the Carb idle adj screws work and adjust the engine vacuum to the highest and most steady reading. Make sure you change the engine oil. A photo of the engine bay would be nice. You don't seem to have a vacuum leak which would result in a lean fuel mixture. You could remove the Carb top and see how much dirt is in the float bowl. If having the fuel pressure and the Carb input valve clean does not allow the idle mixture screws to adjust correctly then return the Carb to Max after calling him.

05-05-2021, 04:17 PM	#63
Terry,OH Senior Member Join Date: May 2010 Posts: 4,751	Re: Flathead Running rich Your engine seems to have a lot of valve lifter noise. IMO I would have Charlie Schwindler check out the fuel pump and get the pressure down and not install a pressure regulator. NAPA sells fuel filters for the glass bowl pump. Ask Charlie to install one. Remove the Carb input valve and clean. Then see if the Carb idle adj screws work and adjust the engine vacuum to the highest and most steady reading. Make sure you change the engine oil. A photo of the engine bay would be nice. You don't seem to have a vacuum leak which would result in a lean fuel mixture. You could remove the Carb top and see how much dirt is in the float bowl. If having the fuel pressure and the Carb input valve clean does not allow the idle mixture screws to adjust correctly then return the Carb to Max after calling him.