6.0 diesel cranks/no start the oil pressure is only 300 psi at the injector's ?

Hi Alzo, I'm not coming up with a 6.0L diesel engine for the 94 F-350, is that the original engine? If not, what is it from? That oil pressure is about 1/10th of what you should have. The 6.0l diesel used in the Dodge Ram takes 3000PSI. First thing is first. Find where you are loosing pressure. Pressure regulator, bad high pressure oil pump (HPOP), etc are all suspect. If you had a leaky oil line, it would be powerwashing your engine bay with oil, so no worries there. You could be very low on oil, but I'm guessing you already checked that. Let me know if you need more help, or have any new developments.