sawman, could be that your return on your vp is sticking sometimes, the return banjo i think has a check ball in it and sometimes the spring in it sticks open letting the pressure bleed off, could be something to look at, its pretty cheap. other than that, the next time it does it i would instead of using eather crack the lines and see what you are getting for pressure out of the lines. my vp never threw a code when it died. just died. everyone says that they do but mine was siezed very tight when i took it off so im sure it was done lol. hope this helps some.

Turbo where is this check ball? I tried startin mine up a little while ago and it didnt but then i left it for about 10 minutes and it started right up like nothin was wrong. Still had the check engine light on tho. I killed it to plug a hole i forgot to plug and it wont start now. :dang:

crank sensor will cause this as well

where might that crank sensor be located mainman?

next to the starter on the block facing the tone ring of the crank

sounds like possible injection pump failure. Mine did this about 3 years ago and the only way I could get it to run was with ether (I know, I know). It would tun fine after it was running but cut it off and you had to use ether or pull it off. I replaced the injection pump and know mor problems. I was told all these other things that could cause it and none of those worked.:argh:

i dont get but a little purg of fuel then nothing, i wait 10 min an ir will start. I will change check valve thanks

the crank senser is a pain to get to and can be a p[ain to get out. my truck was doing the same thing. it would crank and not start then start fine. ift was like i got air everytime it sat. when it did start it would rev then go to idle. check engine and all. i found a leaking injector. i dont know but might be the same thing

Cranked up was running. Bled brakes put it back on ground . Just turns over
 

I was bleeding brakes truck running. Got it off the jack went to start it right back up just turns over.