I have a 1994 k3500 with a 6.5 turbo diesel and I have replaced the fuel sending unit, lift pump with aftermarket, Leroy diesel fuel pump relay harness did the feed the beast mod to the fuel filter, replaced the pmd, replaced the fuel solenoid shut off, and replaced the oil pressure unit. With all that replaced the truck will still not run. I also replaced both batteries and cleaned all the grounds all over the truck. I have fuel up to and into the injector but no fuel coming out of the injector. I have power to the PMD and fuel to the injector, about 9psi at the injector but nothing when I open a line to an injector. What am I missing? I have on order the crank position sensor. I also put on a one-way check valve on the fuel line right behind the fuel filter. All fuses are good and have been tested. Please help I have to be missing something.