The worn pump well lets fuel seep by the rubber plunger after the carb warms up, as I understand it. I tried everything I could think of to make that carb work, float settings lower, fuel pressure down to 3 1/2 psi, new accelerator pump parts. Nothing worked. A Holley does now though.
It is hard to prove that that is the problem for absolute certain, but I had some thoughts on possible repairs. Maybe just a hone with a real fine stone and polish it?
If the ID is worn enough that the rubber pump doesnt
have enough interference and lets fuel by it...MAYBE
a piece of thin wall tubing pressed in to give a smooth
wall and a smaller ID... I've never tried it ... if you
can find the right size tube... I havent used one of those
carbs for years now
