Oil in hpop reservoir - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 25 (permalink) Old 04-02-2013, 04:08 AM Thread Starter
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Oil in hpop reservoir

I recently replaced the fuel injector sleeves in my 02 7.3L. I had the oil changed as soon as I finished that project. I've noticed the oil on the dipstick is staying "cleaner" looking longer than it did before. I attributed that to the injector o-rings being shot. Problem now is that my truck is throwing a p1211 code. I installed a gauge today to check my hpop pressure. I'm only putting out 2200 psi max but I noticed when installing the fitting to hook my gauge to that the oil in the oil rail is really black. Doesn't the oil for the hpop recirculate back through the entire engine? Can't understand the huge contrast in color between oil pan and oil rail.
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post #2 of 25 (permalink) Old 04-02-2013, 04:22 AM
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Re: Oil in hpop reservoir

I change my HPOP reservoir oil on its own because, while the oil there does circulate with the regular oil, it doesn't cycle as often as the rest of the system and does get dirty sooner. It is such an important part of how well the injectors distribute fuel, that it is well worth the extra effort to keep it clean.
Drain out the HPOP reservoir, re-add oil (1 qt or till topped off.) drive for a day , repeat until oil appears clean. There are approximately three quarts total in the injector HPOP system.
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post #3 of 25 (permalink) Old 04-02-2013, 04:28 AM
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Re: Oil in hpop reservoir

OR drive the truck for a few minutes and all of the oil in the HPOP system will be changed...

I suspect that if you dip the oil from the res and drop it on a white card and do the same with the dipstick you'll see the same color

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post #4 of 25 (permalink) Old 04-02-2013, 04:29 AM
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Re: Oil in hpop reservoir

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Originally Posted by prheitz View Post
I change my HPOP reservoir oil on its own because, while the oil there does circulate with the regular oil, it doesn't cycle as often as the rest of the system and does get dirty sooner. It is such an important part of how well the injectors distribute fuel, that it is well worth the extra effort to keep it clean.
Drain out the HPOP reservoir, re-add oil (1 qt or till topped off.) drive for a day , repeat until oil appears clean. There are approximately three quarts total in the injector HPOP system.
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Originally Posted by prheitz View Post
I change my HPOP oil, the oil does circulate with the regular oil, it doesn't cycle as often and does get dirty sooner.
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post #5 of 25 (permalink) Old 04-02-2013, 09:00 AM
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Re: Oil in hpop reservoir

The oil will naturally recirculate so there is no need to change out the oil in the reservoir. How many miles on the HPOP? Are you tuned?
post #6 of 25 (permalink) Old 04-02-2013, 12:15 PM
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Re: Oil in hpop reservoir

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Originally Posted by prheitz View Post
There are approximately three quarts total in the injector HPOP system.
There is no such thing as a separate HPOP system. Its all the same oil and recirculates in seconds.

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post #7 of 25 (permalink) Old 04-02-2013, 02:30 PM Thread Starter
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Re: Oil in hpop reservoir

130,000 miles on the pump. I'm running a super tech 65 hp tune. Have had this same tune for over ten years now. From some other posts I've read, I need to be in the 2800-3000 psi range. Is that correct?
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post #8 of 25 (permalink) Old 04-02-2013, 02:40 PM
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Re: Oil in hpop reservoir

Do you have difficulty with hot starts? 2200 rail pressure with stock injectors is an issue-- You are throwing the p1211 because the rail pressure will not meet the commanded requirement of the tuning. I suspect the pump delivers plenty of pressure, but you are not holding the pressure due to a leak.

At 130K, its time-- Start with the IPR oring replacement, then go to injector orings. The top oring on the injector that holds oil rail pressure is often the first one to go.

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post #9 of 25 (permalink) Old 04-02-2013, 06:25 PM Thread Starter
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Re: Oil in hpop reservoir

Injector o-rings are new. Just replaced them when i replaced injector sleeves about two months ago. I'll check the IPR o-ring.
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post #10 of 25 (permalink) Old 04-02-2013, 06:46 PM
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Re: Oil in hpop reservoir

Quote:
Originally Posted by parkermrk View Post
130,000 miles on the pump. I'm running a super tech 65 hp tune. Have had this same tune for over ten years now. From some other posts I've read, I need to be in the 2800-3000 psi range. Is that correct?
Yes, that is correct. Have you tried doing a WOT run without the chip? What is your IPR duty cycle when you are at 2200 psi?

Quote:
Originally Posted by mandkole View Post
Do you have difficulty with hot starts? 2200 rail pressure with stock injectors is an issue-- You are throwing the p1211 because the rail pressure will not meet the commanded requirement of the tuning. I suspect the pump delivers plenty of pressure, but you are not holding the pressure due to a leak.

At 130K, its time-- Start with the IPR oring replacement, then go to injector orings. The top oring on the injector that holds oil rail pressure is often the first one to go.
This is very possible. Change the o-rings on the IPR and injectors. If the problem is still there, I would say it is time for a new HPOP.
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