2000 cummins 2500 fass fuel lift pump brand new vp44 inj pump new cam and crankshaft sensors engine cranks over fast but does not fire have fuel at injection lines have checked the wiring in cab and the engine harness found no issues only codes coming out of the truck is p1693 don't know where to go from here

 

How much fuel pressure do you have while cranking? Anything over 5psi while cranking will make it hard to start. Did you bleed injectors 1,3,&4? It has to have fuel to 3 cylinders to start. 1693 code is a companion code and you will need to hook it up to a scanner to pull the other codes.

 

fuel pressure is at 12 psi plus the injectors have been bleed out and have to borrow a scanner tomorrow. What happened with this truck is it was running like a dream for my wife. She pulled into the yard shut it off and unhooked the stock trailer. When she came back 15 mins later it would not start. I pulled the pump off and sent it away to be checked nothing wrong with it. I then replaced the sensors on both the cam and the crank still nothing. The lift pump isnt the issue its been replaced