Ford Cant fix it! Starting problem! Now what?

[DENALI]

My truck is an 03 and the engine has 105k on it. Since day one when i installed the engine it starts and runs for about 3 seconds then dies. Then it tries to start 4-6 times (hits and dies) then it starts and runs fine. For the rest of the day it starts and runs just fine but you let it sit overnight and the same problem crops up. Ford replaced the oil filter and cap (even though it had a motorcraft filter in it) cleaned the bypass valve in the bottom of the filter housing, they pressure tested the high pressure oil system by pulling the passenger valve cover and air testing it. They said there were no leaks found by doing this. They said it has to be a high pressure bleed off somewhere but they dont know where. They said it is almost like the hpop reservoir is leaking but its cast into the block so it cant. The 2 diesel mechanics there dont have a clue what else it could be. They said they could tear the engine down but they would be taking a best guess as to what it was. They also said the low pressure side is building pressure as it should.
Anyhow i am hoping someone here can help me out. Other things that have been checked and are fine are FICM and Fuel pressure. It has the latest strategy as well. Thanks

[UserError]

did you get a second opinion? to me sounds like the symptoms my truck had my ficm and hpop went bad.

[2006PSDSD]

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[DENALI]

Well its not the FICM. Voltage on it stays a constant 48.5 according to my scanguage.

[DENALI]

Somewhat of an update. Talked to the mechanic at ford directly instead of the service manager and the second mechanic who didnt actually work onthe truck. He said it has to be something in the low pressure oil system that is leaking down overnight. If it was the high pressure oil system it wouldnt even fire the first time until it cranked long enough to build the pressure to fire the injectors but since it fires and runs for a few seconds right away he believes the high pressure side of it is fine and it dies because the low pressure side has to play catch up. He said the low pressure oil pump is working fine but somewhere between it and the high pressure side there is a problem with a leak down. so maybe that will help you guys a bit figure out whats up. Thanks

[2006PSDSD]

good info though. TTT

[PGreenSVT]

Originally Posted by DENALI

Somewhat of an update. Talked to the mechanic at ford directly instead of the service manager and the second mechanic who didnt actually work onthe truck. He said it has to be something in the low pressure oil system that is leaking down overnight. If it was the high pressure oil system it wouldnt even fire the first time until it cranked long enough to build the pressure to fire the injectors but since it fires and runs for a few seconds right away he believes the high pressure side of it is fine and it dies because the low pressure side has to play catch up. He said the low pressure oil pump is working fine but somewhere between it and the high pressure side there is a problem with a leak down. so maybe that will help you guys a bit figure out whats up. Thanks

I don't believe that to be true. The HPOP draws from the reservoir under the oil cooler. The reservoir holds 2 qts of oil give or take a little. I don't believe it is running out of oil in 2 or 3 seconds with that amount of oil to draw from.

When cranking what is the ICP voltage and the IPR duty cycle? What is the IPR ramp rate? Sounds to me like your dealership hires parts changers and not mechanics. Is there some where else you can take it that knows the 6.0?

[fordfreak4life]

your hpop is on its way out, my truck did this for about 6 months straight, then all symptoms went away for about a month, truck ran great. Was driving the truck to work one morning and turned the corner to come into town, got up to speed, "Whammy" lost all power, coasted to the side of the road. Over nighted a HPOP from sunrise ford in cali and she ran strong until i blew the headgaskets racing a duraturd

[DENALI]

Originally Posted by PGreenSVT

I don't believe that to be true. The HPOP draws from the reservoir under the oil cooler. The reservoir holds 2 qts of oil give or take a little. I don't believe it is running out of oil in 2 or 3 seconds with that amount of oil to draw from.

When cranking what is the ICP voltage and the IPR duty cycle? What is the IPR ramp rate? Sounds to me like your dealership hires parts changers and not mechanics. Is there some where else you can take it that knows the 6.0?

I dont know what to do or to think it is at this point. Can any of the above be checked with a scanguage? There isnt another dealer around within an hour not to mention they charged me almost $400 for this non fix. I guess i will just drive it for now and see what i can figure out when i tear into it for a egr delete and oil cooler change. Anyone know any good 6.0 guys in the Kansas area? At this point i would even drive to surrounding states just to get this figured out!

[fordfreak4life]

Originally Posted by DENALI

I dont know what to do or to think it is at this point. Can any of the above be checked with a scanguage? There isnt another dealer around within an hour not to mention they charged me almost $400 for this non fix. I guess i will just drive it for now and see what i can figure out when i tear into it for a egr delete and oil cooler change. Anyone know any good 6.0 guys in the Kansas area? At this point i would even drive to surrounding states just to get this figured out!

bring it by, I'll take a swing at it, I won't give up as easy as the ford tech, ill swap the HPOP out of my personal pickup for testing purposes