this is my dads truck nothing has been done to it I was driveing along when it just died won't start but with eather got fuel to filter to the injecters but it won't start can't get any dash codes the last time this happend fuel gauge was wrong and run out of fuel but not this time thanks

 

My reply posted on Cummins Forum. Good luck.

 

No way it jumps time.

 

I took it to auto zone today they got a code 1688 is there any thing I need to check before buying a pump? If I take 3 injectors lines loose it will try to start

 

Load test the injection pump power and ground at the injection pump connector using a head light as a load Clear the fault codes, turn the ignition key OFF for at least 60 seconds, turn the key ON. Without starting or cranking the engine, check if p1688 resets. If p1688 resets at key ON, replace the injection pump. If the fault only resets with the ENGINE RUNNING, look for a loose power or ground connection to the injection pump, or a bad fuel injection pump relay.