The Ford Barn

CT Jack · 01-22-2023, 08:26 PM

It sounds like you have a fuel delivery problem and also the timing seems to be advanced a little too much. Toward the end of your video it sounded like the carburetor was starting to gasp for fuel. I would replace the carburetor with a rebuilt Zenith and reset the timing. The slight knocking toward the end is probably the result of being too advanced.
Putting Marvel Mystery oil directly in the carburetor is not going to do much good in my view. It's much better to put it in your fuel tank. Make sure your fuel is good. I recently got a bad batch of fuel which caused my engine to abruptly run unbelievably bad.

01-22-2023, 08:26 PM	#21
CT Jack Senior Member Join Date: May 2010 Location: Hebron, CT Posts: 639	Re: Backfiring - getting frustrated It sounds like you have a fuel delivery problem and also the timing seems to be advanced a little too much. Toward the end of your video it sounded like the carburetor was starting to gasp for fuel. I would replace the carburetor with a rebuilt Zenith and reset the timing. The slight knocking toward the end is probably the result of being too advanced. Putting Marvel Mystery oil directly in the carburetor is not going to do much good in my view. It's much better to put it in your fuel tank. Make sure your fuel is good. I recently got a bad batch of fuel which caused my engine to abruptly run unbelievably bad.