I’m having issues restarting my 1988 F-350, 460, it has 90,000 miles. It will start and run fine when the engine is cold, but once it is has been running for a while it doesn’t want to restart. Sounds like it’s trying to but won’t. Replaced both fuel pumps, fuel filter, new plugs and wires and distributor cap. If I let it set for five – ten minutes starts back up but a little ruff then runs fine again. Any ideas?

Thanks,
Bob