1996 Chevy Express van 1500 8cyl ,v8 ,350 eng. 162,000 miles

will stop after running an hour or two.replaced: 2 fuel pumps,fuel filter,fuel relay,plugs, wires,rotor, distributor, coil,spider, 57 pound of pressure from fuel pump.Continue to cut off after an hour or two.Help.



Response:

1)Have you checked your fuel pressure regulator?

2)vapor lock

3)Check Back pressure on catalytic converter

4) check for Engine codes



Freeautomechanic.com tip : Once the engine has died, check to see what is missing... spark or fuel or both, then concentrate on that circuit to determine the problem. "simplify"