This topic must appear somewhere on here but I can't seem to find search results.

1951 Chevy 3600 216
Rochester B Carb

New fuel pump installed last week and everything was great until yesterday. Truck sputtered and stalled but quickly recovered by pumping the accelerator and I made it to work. End of the day It restarted and I made it home with no issue. Today same story... started right up, went to work okay but coming home it sputtered a bit then stalled, and now will not maintain an idle.

It restarts fine. Pumping the accelerator pedal keeps it going but it stalls and stops when letting of the gas to idle.

If anyone can suggest a diagnosis page I'd be glad for some direction. If you have a good inkling about the problem I'd like to hear your theory as well.
Thanks,
Rog