Not starting

On it tomorrow.

Took out the pump I got a month or so ago, went to NAPA traded out the weak pump for a new one (Delphi), installed it, the truck started right up, ran a little high on the RPMs and the exhaust smelled a bit "lacquered". But I figured that was from the throttle body cleaner I had used to clean the throttle with. Ran well for ten to fifteen minutes, I wanted her to get up to operating temperature, my wife hollered out "shut that truck off, you are stinking up the house!". So I did, and now it will not restart. I am back to square one. I will borrow the fuel pressure gauge on Tuesday (weather permitting) and test again.
Might it be a bad fuel pressure regulator?

Did a pressure test between rainstorms today, a strong 62-64 PSI, tried to start her again, nothing. What is next Roy?

I will look into that. She ran great for about fifteen minutes on Sunday until I had to shut it down. Might it be the fuel pressure regulator?

Sorry to bother you Roy, I cannot seem to find any way to test a CSFI system with a noid light.
Could you send me some reference or guides?

8 poppet valves in a CSFI.

Like an OBD II?

Got it. I will see if NAPA rents one out on Sunday.

Good morning Roy,

I went to NAPA and borrowed their OBD II reader and fuel pressure test kit on Sunday, I hooked up the reader, and got some old memory codes and erased them, went to turn the key to get new "live codes" and she started right up, let her run for an hour or so with no issues other than black smoke and a funky turpentine/lacquer smell, took her out for a "test drive" and everything seemed to work ok, with only a couple of minor backfires.
I let the truck rest for a half an hour, for the fuel and vacuum pressure to relax, it started right back up. Let it rest again for three hours and it started back up again but with some choking out after five minutes, touched the throttle and it came out of it. I checked the codes again and only got one for a bad O2 sensor which is broken.
Back when the no starts began I poured a bottle of Lucas fuel system cleaner into the tank (about half full, fifteen gallons) with all the cranking over and allowing her to sit afterward, maybe it loosened something up. From what I have read, black smoke, some uneven idle, a few backfires, and no start are all signs of a bad fuel pressure regulator. What is your opinion?

I have a broken O2 sensor. I noticed it when I reinstalled my transmission this spring, but it ran well without it. 62-64PSI Yes, here is a good quality video:
https://www.youtube.com/watch?v=_6Iipjvif0Y

Well Roy, she is starting right up just like always, but she is showing all of the tell-tale signs of a bad fuel pressure regulator.
I am going to start driving it into work again today, praying it gets me home again.
NAPA wants $65.00 for a new fuel pressure regulator. I have found some online for as low as $15.00, but it is going to be a pain in the backside to replace. I am going to stick with the ACDelco when I do it I will let you know what happens, so you may help others later on.
If you are ever in Maine, swing by and I will buy you a coffee or something.
Thanks