No Oil
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Cargo Master
Joined: Aug 2004
Posts: 3,455
Likes: 8
From: Williams Lake B.C.
No Oil
2001 F-250 4x4
What could cause the oil from the HPOP to drain away?
Truck quit so i checked and there was no oil in HPOP.
Filled up with oil then lost plug to tank.
Got a bolt to work for the tank but truck still doesnt start?
What could cause the oil from the HPOP to drain away?
Truck quit so i checked and there was no oil in HPOP.
Filled up with oil then lost plug to tank.
Got a bolt to work for the tank but truck still doesnt start?
Post Fiend
Joined: Feb 2008
Posts: 10,977
Likes: 5
From: Lancaster, Pa.
Isn't there check valves in the HPOP that fail and lets the HPOP drain, ???? Heard of that in previous threads.
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Cargo Master
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From: Williams Lake B.C.
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Joined: Oct 2004
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From: Concord NC
Mike is right, there is a check valve that can stick and allow the oil to drain back and empty the res. Ken, the oil system is not separate in the HPOP, it is still supplied from the LPOP and is all the same oil. Goes from the HPOP through the injectors and drains back to the oil pan. So, a weak LPOP will cause the HPOP to run dry and shut truck down.
Thread Starter
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Cargo Master
Joined: Aug 2004
Posts: 3,455
Likes: 8
From: Williams Lake B.C.
Ill try ................
Thread Starter
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Cargo Master
Joined: Aug 2004
Posts: 3,455
Likes: 8
From: Williams Lake B.C.
Mike is right, there is a check valve that can stick and allow the oil to drain back and empty the res. Ken, the oil system is not separate in the HPOP, it is still supplied from the LPOP and is all the same oil. Goes from the HPOP through the injectors and drains back to the oil pan. So, a weak LPOP will cause the HPOP to run dry and shut truck down.
Got ya thanks.
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
It might be easier to find a fitting to fit where the EOP sensor goes. You can remove the EOP sensor and use it to find a matchng fitting. If you are goig to use a mechanical gauge you won't need the EOP sensor anyway and can just re-install after testing.
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Cargo Master
Joined: Aug 2004
Posts: 3,455
Likes: 8
From: Williams Lake B.C.
Filled up the HPOP res and tryed to start the truck , it didnt start.
Checked oil level and it was still up so I guess that wasnt the problem.
The tach moves when turning the truck over?
What fuse is it that goes when the heater shorts out?
Is there a way to test the CPS?
Checked oil level and it was still up so I guess that wasnt the problem.
The tach moves when turning the truck over?
What fuse is it that goes when the heater shorts out?
Is there a way to test the CPS?