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Old 02-08-2014, 08:33 AM
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Has anyone heard of this?

F250, 2006, 6.0L with 250K mi.

I recently jumped on hwy and hit 70mph and the engine started acting like it was starving for fuel and died. Took a minute and got it restarted headed back to the house and it did the same thing going the other direction. I limped it to my mechanic.
I reached out here on the forum and the general response was HPOP and STC fitting(since the IPR is new and not the problem). My mechanic checked all the o-rings, stand pipes and changed the rail dummy plugs. We even put a new HPOP because of the age of the vehicle.
Picked it up ran it home and guess what, died while in route. no warning, like before, just died.
Now it back at the mechanic. His assessment is that a injector must be sticking, over fueling and flooding the crankcase with fuel. Causing the oil to aerate, causing the high pressure oil system to fail?

Any thoughts or similar experiences out there? I'm running out of $$$$$
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Old 02-08-2014, 08:36 AM
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Did you check fuel pressure?
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Old 02-08-2014, 11:43 AM
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First thing we checked. It was all good. The truck will idle fine, but once warm and under load, it fails.

Fuel delivery to the injectors seems fine, so what ever is happening, is after that.
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Old 02-08-2014, 11:51 AM
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What about the oil rail o rings? The ones around the nipples?
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Old 02-08-2014, 12:33 PM
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Good. He said he did a dye test and #6 & #8 injectors were leaking thru the body of the injector. He's convinced its a fuel in oil issue, but all ive read says otherwise.

Thoughts?
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Old 02-09-2014, 07:08 AM
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Pretty unusual for the injectors to leak. Fuel pressure it's 45-60 psi and icp is 700-3000 so I doubt the fuel and oil is mixing there. Usually fuel in the oil is from a stuck injector. Have you air tested the oil system? Maybe a compression test.
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Old 02-12-2014, 06:03 AM
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Exclamation

My dad's truck is doing the exact same thing. Ford changed the computer yesterday because that's the "error code" those idiots read. He is quite frustrated and wants to sell it for scrap. Let's figure this out.
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Old 02-12-2014, 06:10 AM
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If the diesel is going into the oil, your turbo will be the first one to notice it, because it will have no lubrication, plus, you can check it very easy by taking out the oil stick and checking the sample, if it has any diesel it will smell like it.

Also, the only place that the diesel may leak to the oil system is in the head, where the injector is placed. The injector has 2 o-rings, a black and a white ones, if the black one fails, the diesel runs to the head. If the white fails, the diesel runs to the chamber in the admision phase and will probably hydro-lock the cylinder once it goes up. Most of the time it just smokes white smoke and fails.

I think it may be a FICM problem...

Do you notice any black smoke on the exhaust before it starts to fail? If so, it may be something in the valvetrain, a valve not opening as it should under load.

It could also be some fuel problems, whats the pressure? The blue spring mod really adds some pressure to the bowl.

Last edited by JorgeCanek; 02-12-2014 at 06:16 AM.
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Old 02-12-2014, 02:03 PM
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Wow. A scanner and data logging will probably be needed to monitor icp and desired as well as ficm. The whole leaky injector is a stretch. Possible, but not probable.
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Old 02-14-2014, 01:30 AM
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Was the fuel pressure checked while driving down the road? or just at idle or parked, if so your fuel pressure test is irrelevant, your pressure could be dropping off like mine was causing the truck to die when warm, then it would restart after I let it sit.

Extended periods of driving under this condition can wipe out your injectors
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