truck is not running its a 98. 5 3500 4wd dually. 222k mi yesterday going down the freeway it just cut out i saw the oil pressure guage falling and i had no throttle. got over to the side and started checking the truck out. lift pump is working not clogged i had a spare fuel filter and changed it out and i know its getting fuel to the filter i cracked the injector lines and diesel came out. will crank just no start. engine light is on it has three codes:
P1688- interior injection pump fail
P0251- VP44 Fuel valve feed back circuit
P0253- Inject pump fuel valve open circuit
need help any ideas
P1688- interior injection pump fail
P0251- VP44 Fuel valve feed back circuit
P0253- Inject pump fuel valve open circuit
need help any ideas