Fresh diesel fuel? How's about fuel filter? Need changed? Do you have a primer pump on system, if you do crack line loose at injector and operate primer pump until you get fuel & tighten line. If you don't have a primer pump on system, rig one up with one hose in diesel tank & second hose going to fuel pump supply line. It sounds like you need to change filter, fill new filter with diesel fuel before installing, & you have air in system, you might have to crack injector line loose several times to get all the air out of system. Let us know what you find please.
I would either overhaul fuel pump with kit or purchase new one, but first check for an obstruction in tank, pick up tube in tank, fuel lines, etc.