'98.5 D2500
VP44 replaced over a year ago (Thoroughbred rebuild).
>15 PSI to injector pump (17 idle, 14 WFO)
has been doing good since replacement, until now.
I left it idling and went inside the bldg (~5 mins). came back out and it
had come uncranked. Refused to even think about starting after.
Only codes are 1693 and 463. 463 cleared, 1693 did not.
Has fuel only out of #4 injector line.
Good batteries and charge.
Can't think of anything else relevant.

 

So it ran for a year and now wont do anything? Have you tried cracking the lines loose to see if you can get fuel to come out? You might also want to check out your injector pump.

 

In my original post:
Has fuel only out of #4 injector line.

 

Sounds like injector pump is dead

 

Lift pump? If it were me I would want more fuel pressure but that's just my opinion, some folks might disagree.