just like the title says....i was at highway speed and it just died and now wont start ....plenty of fuel ....no fuel squirt when i crack the bleeder ....not sure where to start replacing stuff ....
any advise is appreciated ..thanx in advance...

 

From what Ive been reading here the first place to start would be the PMD if you havent already done it. If its mounted on the IP they say its good to relocate it somewhere else because of the heat in that area. I would also make sure the lift pump is working right.

 

how do i test lift pump? will be ordering new pmd on payday..

 

what year is the truck? when truck died did your heater and radio still work?

 

94 1500 z71 .and yea they did still work ...

 

crack an injector line loose and see if youve got fuel goin to injectors

 

OPS powers the lift pump when the engine runs and is a common failure point,if you have any rust holes in the fuel line the IP won't draw fuel on it's own and you run out of fuel even though the tank is not empty.

A plugged vent in the filler cap can create high enough vacuum in the tank that fuel won't pull out of the tank no matter what also.

Then PMD is another stall causing part as well as worn out ignition switches.

 

mine is a 93 z71 i cant find any ops on it at all ...and i do have a pmd (stock) ...it cranks but wont start ...im gettin close to the end of my rope here ..

 

OPS is under the intake in frt of the filter housing.

No PMD on a 93.

To test the LP you can put 12v to ALDL pin G,OPS still powers LP while engine runs,relay powers it during cranking.

 

im sure im not as knowledgeable as you are with the 6.5 or any other diesels for that matter but i am 10,000% sure that my truck has a pmd i have touched it .. and as for ops i have seen a pic of where it is and my engine does not appear to have one? im not familiar with aldl.. any chance at a diagram???thanx in advance ..