Engine/Transmission (1998.5 - 2002) weird lift pump problem

[VolsFan]

ok, this is the aftermath of my truck dying thread hopefully. I discovered a small leak this morning on the 3/8 line where it attaches to the stock hard line at fuel tank before pump inlet(Vulcan relo. kit) So i was hoping this would taking care of the missing and shutting off. I ran the truck around, ran fine, let it sit and idle in the driveway, and within five minutes, started missing again, slightly. I was hoping it was just still purging air from the system. My fuel pressure stayed constant at 15 psi. I shut the truck down, and went out about an hour later and the lp would not cycle. I tried a few times, nothing, thats when I ordered a 4601 carter( will get a permanent replacement in the summer) Just for the heck of it, I went back out and tried starting it, the pump cycled, and the truck fired right up, with an occasional miss, almost shut down but caught itself, went smooth again, all the while, constant 15 psi. So is my lp causing this along with air in the lines?

 

[WestTN]

I think you need to get the truck scanned for trouble codes. My guess is one of them will be 0216.

 

[VolsFan]

god, dont say that, its not showing any codes though. I'm taking it in sometime this week, I ran it this morning and pulled the same stuff again, i got it back home and gonna leave it sit until i can get it to a shop. The VP is still under 1 yr warranty from where I got it put in, but they say getting it honored is easier said than done, hopefully its not that