Hey guys im currently working on a 2005 6.0. Well my buddy stated he was driving the truck and boom it shut off. Well I hooked my snapon solus ultra up to it checked FICM voltage the whole 9 yards. Well the ipr valve seems to be doing its duty cycal and ficm voltage is at 48v everything looked good except icp psi. So I did the quick trick and unhooked it to see if it would start and still nothing. Well hooked up its readi g 5.6psi-8psi... well I hooked up my air tester where the icp sensor goes and hit it with 150psi of air and nothing. Just a really tiny hiss out of pass valve cover but I believe my home made fitting was leaking. But even moved ipr valve no change. So is it looking to be a hpop? My buddy bought it at 220k and currently has 289k believe its original motor. I thought it was stc fitting but no air leaking out of that area. Thanks for the help guys
Ron