Ok guys got a scan tool on my truck today to check the my pressure at crank today and from what I read it needed 450-500 psi to start well I was getting around 2000 psi at crank what is this an indication of? Bad IPR or what? The truck I'm working on is the one in my sig. Won't start unless plugged in have replaced glow plugs, uvch , new GPR, pulled injectors had them flow tested and cleaned and brand new batteries still won't start. Finally got yo test the pump today hoping it would read low and it's reading at over 2000 psi. Someone help me figure this out!
Thank you for your time and help!