1980 F350 gas engine
We have a F350 Ford 1 ton with a Gas 460 engine. It was a fire truck pumper with a PTO we converted to a flat bed. The truck will run fine for one day, the next day its hard to start but then won't stay running. You can pump the accelerator, and it will die. We have drained the gas tank, put in fresh gas, changed the fuel pump, put a in-line fuel filter in to monitor fuel flow, and had the carb rebuilt. Installed all new fuel lines that were rubber. What else can I do?