If you got it to start but it died...and you tried this repeatedly, my vote is that your fuel system is sucking some air and locking/blocking the fuel
. Any air in a diesels fuel system will wreak havoc in short order.
You said you had lines made to replace older (cracked/leaking?) lines. Could those be leaking around the fittings? could you have overtightened a banjo bolt and cracked the fitting/mounting boss?
If you can crack the pump main bleed fitting and see constant fuel flow, tighten and move on to the next in fitting in line. Basically start from the tank and work to the pump, then to the engine.
When I changed out my fuel filters, I pre-filled them to overflowing and then started the engine fine. When I needed some fire starting fluid at a remote campsite one time, I drained about a cup out of the primary filter thinking it was similar to getting the water out. Ha! The doggone thing air locked the next morning and I had to go and use the manual prime on the lift pump, then go through about 5 minutes of sporadic cranking to get the air out. What a PITA (can you say "wont do THAT again")!