92 4.3L Wseries Dies and wont restart for a couple of hours??

[morphviper]

I have changed the fuel pump, fuel filter, CPI unit, fuel Regulator, clean air intake penlum cleaned EGR valve, changed spark plugs, coil,wires, rotar and cap. It will run fine and just die after a while of driving and wont restart. it cranks, and I am getting spark, but won't start. I am confused!! Any help would be greatly appreciated. Thanks

[amac209]

get a fuel pressure gage and a set of noid lights. if it's a fuel pressure problem look at the connections to the pump as well as the rellay and oil pressure switch, if the noid light doesn't flash check the wiring back to the computer. as well check all computer grounds and harness connections.

[merkfritz]

Originally Posted by morphviper

I have changed the fuel pump, fuel filter, CPI unit, fuel Regulator, clean air intake penlum cleaned EGR valve, changed spark plugs, coil,wires, rotar and cap. It will run fine and just die after a while of driving and wont restart. it cranks, and I am getting spark, but won't start. I am confused!! Any help would be greatly appreciated. Thanks

You need 3 things: air, fuel, and spark. If the fuel filter is plugged, it will produce your symptoms.