Well, the engine cranks well and ECM seems to actuate, but so far no fire. It will light off on starting fluid, but not self sustain. The engine has an electric boost pump on it, but it is inline style, and those are never lift capable, just pressure boosters once flooded with liquid. Trucks these come from still have hand prime pumps on them, I think. Right now I have 4 fuel lines in a gallon jug of diesel about a foot below the engine. It seems to be one delivery and 3 return hoses. They are all 4 below the diesel fluid level surface in the jug. But with only running the electric pump on the engine, I don't think it can lift fuel.
I cracked open one of the common rail injector feed lines, and little to no fuel came out when cranking. For something that should have nearly 20,000psi on it, I expected more than that. So far, I think it is a fuel delivery issue just with the test setup I have. I am going to add a small electric lift pump or outboard hand squeeze bulb on the inlet line, and try again. If still no fire, then will hook a diagnostic tool to it. We have Cummins diag software with the testing we do here. I think I need a manual primer pump on it to push fuel to the electric boost pump.
Engine fuel lines are 2 large ones off the back of the block labeled with one inlet and outlet arrow and then 2 small cloth braided ones coming from the high pressure common rail pump, one off the lower portion and one off the upper higher pressure part. I assume to be for cooling of the pump. Regardless, I have them all submerged in a gallon of diesel, but below the engine (can on ground, engine on trailer). So, lift or primer pump on the single larger 3/8" fuel line is the next shot.
At least mechanically she sounds and seems OK, so far. Who knows, maybe the crank sensor was bumped during removal and is wiped out, etc.... Scan tool should show this if the case, which will be next step if manual ly pressurizing fuel into the inlet line does nothing.
That's all for now, back to work, will try next step tonight after kids are in bed.