We have a 1982 Ford F-150 that stalls out after going about 1 to 2 miles down the road. It will sit an idle for as long as you leave it and not stall out but once you begin driving it then it goes about 1 to 2 miles and start to stall and then just dies. It will crank back up after it sits for a few minutes. We have replaced the fuel pump, the spark plugs, the wires, the air filter. the fuel filter, all of the old steel fuel lines with new fuel line, and we have also drained the tank and removed old gas and replaced with new. We have also replaced the PCV valve. Do you have any suggestions for us to try now that would help keep the truck from stalling out? We have sprayed B-12 on the carburator to make sure that there is no vacuum leak.

Any help would be greatly appreciated
Thanks
Chattlady