please help have 03 no start

[bigjeff]

i have a 03 6.0 it won't start really need some help checked icp pressure with scangauge2 i got truck to start it had just over 600 psi at idle ran for about 5 to 10 min then pressure dropped off to 490 then to 395 and died ipr was at 14.4 % at idle now tried to start truck icp is at best 265 oil temp was 97 degrees i had truck plugged in so is it my hpop or is there a leak somewhere please help before i burn this truck to the ground

[bigjeff]

just tried to start truck again oil temp 82 degrees ipr 77.6% icp went to 379 and then dropped back to 253 please help

[forddieseldoctor]

These trucks aren't know for high pressure oil system leaks. With the readings that you have you either have a bad hpop or ipr valve. As long as your oil gauge in the dash moves after you crank on it for a while. The only way to tell which it is is to install a known good ipr valve.

[bigjeff]

it has a new icp and new ipr

[forddieseldoctor]

Well you have two options. You can remove the pump cover and blow air into the port that is on top of the pump and listen for any leaks if no hissing is heard then replace the pump. Or else you can just replace the high pressure oil pump.

[forddieseldoctor]

Your oil pressure gauge in the dash comes up when you crank on the truck correct?

[bigjeff]

yes the gauge does come up when i crank the truck