ok late 04 I have replaced hpop, ipr, icp, d-plugs, Stand Pipes, j-tube, nipple cup orings and pulled injectors only found one that has a bad inner seal replaced it. truck starts great cold but still have a Hot No Start! My thought is i may still have a bad ipr. When hot at idle i have seen 544 psi from hpop and 70-80% ipr when i was driving it the other day at 3,000 rpms i was in the throttle a little i had 1461 psi from hpop and 83.9% from ipr. once hot shut it off then try to restart i have 479 psi from hpop and 83.9 from ipr. This leads me to feel that my ipr is bad, i'd like to test it but not sure if there is a way to test the ipr sensor? Any help would be greatly appreciated cause i've about lost my patience with this!

 

What are your ICPV's at KOEO? Also if your engine has the wavy oil rails, when you had the oil rails out did you replace the oring on the small plug on the top side of the oil rail? Have you done an air test since the work was done?

 

I will have to check icp volts. Oil rail is not wavy. And going to do another air test today..