Starts cold only

Fred Owner/Technician Santa Barbara, California Posted   Latest   Edited  
Question
Driveability
2004 Ford F-250 Super Duty Lariat 6.0L (P) 4-spd (4R100)—1FTNW21P44EA29327
P2290 - Injector Control Pressure Too Low

Truck towed in, no start, it did start cold ran very rough, checked codes had a number of codes, it came down to number 1 & 3 injector bad. Rremoved ICP applied air pressure and heard a leak in the passenger valve cover, removed both covers, found air leak in #1 & #3 injectors, then to verify I plugged off the HP stand pipes on both banks applied air pressure, tested good, so the problem is only at the injectors. Replaced the two injectors retested okay now. Also found IPR not opening and closing, replaced that, no metal in screen and screen is not torn.

Engine oil was 6,000 over replaced with Motorcraft oil and filter, so far this is what has been replaced, oil and filter, 2 injectors, 2 hp stand pipes all OEM parts, IPR 

Reading are KOEO, then Cranking no start after running for two minutes then when it was running for the two minutes. 

KOEO FICM 12V and 47 volts, ICP 12 PSI, .2 VOLTS, desired pressure 0 IPR 14.8% KOEO

CRANKING FICM 12v 47v, ICP actual 350 psi, ICP .5-.6V, ICP desired 1400 IPR 84%, sync yes

Running for two minutes cold ( will not restart if I shut off) running cold FICM 12.5-13V, FICM 47v, ICP actual 716 psi, ICP .75-1.2v, ICP desired 833 psi, IPR 84.7%

I did notice once it stars the actual IPR will be 40% for one minute or so then goes up to 84% in about 2 minutes of idling.

I think the HPOP is bad, anything I'm missing?

FYI, Truck runs very smooth with the new injectors 

Thanks for your help 

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Albin Diagnostician
Leavenworth, Washington
Albin Default
 

You have a high pressure oil leak. The reason it will start cold is because the oil is think and will not push through the leak as easy as it will when the oil is hot. Here is your evidence. CRANKING FICM 12v 47v, ICP actual 350 psi, ICP .5-.6V, ICP desired 1400 IPR 84%, sync yes. Pay close attention to the ICO voltage. your cranking is .5-.6, you need a minimum of .8 for the engine to…

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Fred Owner/Technician
Santa Barbara, California
Fred Default
 

Excellent information, i heard about not trusting the IPC pressure but using the voltage instead, can a bad pump cause a low ICP voltage? The air test does not show any leaks from bank to bank. What is my nent step? Start from the beginning? Genersl Info. This has the early design injection with ICP under the turbo, hard to get to. Thank you

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Albin Diagnostician
Leavenworth, Washington
Albin Default
 

Yes, that is a hard one to get to. I have an adaptor that fits in one of the dummy plugs on the high pressure rail. I can get to that easy, by pulling one valve cover. A weak HPOP can cause low ICP, since you are working on a basic hydraulic system. On a basic hydraulic system, only two things are required, a pump that is capable of making the needed volume and a restriction to push against to…

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Nathaniel Diagnostician
Ashton, Ontario
Nathaniel Default
 

Albin has this one. FYI, sometimes the crossover tube that connects the STC fitting to the two cylinder heads will crack. Sometimes you can see it when you remove the HPOP cover, either with air applied or cranking it over. Just something not to overlook.

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Fred Owner/Technician
Santa Barbara, California
Fred Default
 

I thought the same thing. Thanks for your input, when the VC were off I did plug the stand pipes which thread into the tubing, then added shop air, the pipes and tubing have a very small air noise which is returning thru the Ipr, (I didn't have it powered up). I had a Ford diesel guy listen to, he said that sounds normal, then with the oil pressure rail off I plugged the 4 ports that go into…

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Jaxon Technical Support Specialist
Stafford Heights, Australia
Jaxon Default
 

Good morning Fred, I offer you some feedback: Introducing acronyms Introduce every acronym before using it in the text. The first time you use the term, put the acronym in parentheses after the full term. Thereafter, you can stick to using the acronym. - The International Olympic Committee (IOC) is headquartered in Switzerland. The IOC President is elected by secret ballot. Do not…

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Fred Owner/Technician
Santa Barbara, California
Fred Default
 

For those who do not work on Ford Diesels Injection control pressure = ICP (sensor) High pressure oil pump = HPOP Fuel injection control module = FICM Injection pressure regulator = IPR Volts = V. Synchronize Yes, means the FICM synced with the PCM (Powertrain control module) also the camshaft sensor along with the crankshaft sensor are sending good signals = sync yes

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Lyle Owner/Technician
Harrisonburg, Virginia
Lyle Default
 

Fred, I'd definitely get eyes on that STC fitting. Piece of cake, once you get the cover off. ;)

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Albin Diagnostician
Leavenworth, Washington
Albin Default
 

That engine does not use an STC fitting. So far, I have never seen the connection to the HPOP fail on that early version engine. Now on the later version that used the cast iron pump, yes,, they all failed.

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Danny Instructor
Montréal, Quebec
Danny Default
 

I have found bad seals on the dtubes a few times

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Fred Owner/Technician
Santa Barbara, California
Fred Default
 

Not familiar with dtubes, I did replace the tubes that thread into the rear engine tube assembly, what I see is, hp pump to discharge tube (it bolts onto the pump), from there is a quick disconnect that connects to the rear engine tube assembly, from there the rear tube assembly connects to high pressure stand pipes which then goes to a flex pipe under each valve cover, that connects to the…

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Rex Technical Support Specialist
Alliance, Ohio
Rex Default
 

Been a while but I have seen the piece that plugs into the back of the pump develop a hairline crack. Holds cold, opens up warm. Hard to see. This is the piece the branch tubes connect to. Try this site. Some good info in these "Coffee Table Books" forddoctorsdts​.​com/coffeetableboo…

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Gail Technician
Garner, North Carolina
Gail Default
 

The others have this well covered. Only thing i'll add is watch the oil pressure gauge at cold start. See how quickly the pressure comes up. If it takes a lot of cranking you may have damage to the low pressure oil pump. You can remove the pressure relief valve and make sure it isn't stuck open.

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Ken Diagnostician
Fortuna, California
Ken Default
 

There are 2 block off adapters that are from OTC (I think) that work with the early 6.0L with the braided quick connect lines that feed oil rails. This gives you the ability to dead head the high pressure oil pump and watch your ICP while cranking. This leaves no doubt about high pressure pump. Might be a little late with this vehicle but will definitely help next time! I wish I could remember…

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Chris Technical Support Specialist
Commack, New York
Chris Default
 

To "dead head" the HP oil pump you separate the oil rails from the stand pipes with block off tools. Straight rail, with braided line from standpipe uses [ Adapter, Oil Pressure Leak Test 303-756 ] to eliminate the rails, rear mounted ICP Wavy Rail, with hard standpipes uses [Adapter, ICP Test … ] and [ Adapter, ICP Test … ] with jumper [ Adapter Cable, ICP/EBC 418-D003…

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Fred Owner/Technician
Santa Barbara, California
Fred Resolution
 

This truck is finished, end result hpop, test procedure was scandata of course, air pressure testing thru ICP difficult to get to under turbo, found 2 injectors leaking under passenger valve cover, replaced them, still low hpop pressure, pulled pump and re-pressured with the pump off the pipe that bolts onto the pump was a perfect place to add air pressure, no leaks heard, put in a new hpop…

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