We just bought a 1986 Ford E Van with a 460 for my wife's daycare.
The 460 is one of the most obsinate engines I have ever seen.
According to the previous owners paperwork they did alot of work on the carb & fuel system.

We still have problems with starting. Most times it fires right up.
But then it will stall unless its allowed to warm up.
Then she drives to the park and spends 5 hours. Then goes to leave and it won't start then she spends 15-20 minutes trying to start it.

My question after all that. Is would the PCM be the cause. I have researched the problem online and I think it could be.
But I'm not into engine's.

Please ley me know or guide me.

Thanks,
Steve, Portland/Gresham Oregon

 

First off you should not have a PCM in a 1986 with a 460 and a carburetor.
You should also have electric fuel pumps.

Do you have two tanks?
It would be nice to know what the previous owners paperwork said was done to the fuel system.

Sounds like it might be a a problem with the choke. It is hard to find someone to work on it anymore that understands carburetors and this fuel system you have.

 

Sounds like a choke issue like mentioned or maybe a heat soak problem after hot shutdown and the fuel is boiling out of the carb into the intake and "flooding" the engine.