04 F350 6.0 PSD Stock HPOP question - Ford Powerstroke Diesel Forum
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Old 12-11-2010, 12:19 PM
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Thumbs down 04 F350 6.0 PSD Stock HPOP question

I have a 04 F-350 6.0 PSD thats stock. I have followed this forum to trouble shoot the NO-Start issue. I am down to the HPOP. I took the oil filter out and held down the check valve with a long screwdriver had the engine cranked over and there is no oil coming into the canister at all. There has also been no oil pressure on my dash guage either. Just to verify, does that mean its shot? I need all the input I can get guys.
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Old 12-11-2010, 12:46 PM
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I would be more inclined to look at your LPOP than the HPOP.

LPOP feeds the oil canister and HPOP Reservoirs. HPOP issues would lead to no start, LPOP would mean no oil goin anywhere in your engine.
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Old 12-11-2010, 01:22 PM
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Thanks Jay. Is the LPOP located under the turbo?
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Old 12-11-2010, 01:27 PM
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Send a message via Yahoo to Dave
HPOP is under the turbo

Diesel Technician Society
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Old 12-11-2010, 01:34 PM
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If the HPOP causes a no start, no oil guage pressure, would the HPOP feed to the LPOP or is that totally seperate? Where would the LPOP be located? I really appreciate your time.
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Old 12-11-2010, 02:42 PM
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Due To not having any gauge (7psi switch IIRC) movement, I would suspect something awry with your LPOP. LPOP sucks the oil out of the Pan and feeds it to the engine oil passages (main bearings, rod bearings, HPOP resevoir, Oil filter canister, etc) If your not getting any oil to your canister, or gauge movement, I would check the LPOP.

LPOP is located behind crankshaft pulley/dampner, and is of a geroter type design. They are not failure prone, but they do sometimes have issues. Another item to check would be the oil pressure regulator being stuck in the open position.

-copy/paste of Ford TSB-

Low Lube Oil Pressure:
Some 6.0 engines may exhibit low lube oil pressure caused by leakage in the high pressure oil system. To determine if this is the case, remove the oil filter and hold down the oil drain valve on the left side of the filter housing with a screwdriver. Watch for oil flow with the engine cranking. If flow is present, diagnose the HP oil system for leaks. If no flow is present, diagnose the lube oil system. Broadcast Message 1044
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Old 12-11-2010, 03:06 PM
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Thanks, I will check the oil pressure regulator where would I look for that?
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Old 12-11-2010, 04:32 PM
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The 6.0 Bible. page 23.

Don't forget to click the table of contents at the top when your done.
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Old 12-11-2010, 06:41 PM
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Thank-you so much for the info. You have been very helpful. kramer
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Old 12-12-2010, 06:34 PM
'Merica


 

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Happy to help. Good luck.
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