Same issue as in the fall -- Everything started when the fuel pump died. After cleaning the carburetor and replacing the fuel filter, points, coil, plugs, plug wires, adjusting the points and the timing, the engine is still running a little rough at idle and will cough, stumble and backfire through the carb at high revs or under a load.
I can not guarantee we have the timing or points perfect. And we may not have gotten all the pieces of the fuel pump diaphram out of the carburetor.
Any suggestions or ideas?
Thanks,
John