hpop problems. - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 24 (permalink) Old 03-12-2014, 07:40 AM Thread Starter
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hpop problems.

I had a bad hpop. I replaced with a used one. Drove the truck a 1/4 mile it dies and wont start back. pull it back to the shop and ck the hpop pressure at this time I was only getting 350 psi. Do I have something going on that is causing the hpop to go out?
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post #2 of 24 (permalink) Old 03-12-2014, 01:45 PM
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Re: hpop problems.

With 350 psi of ICP it sounds like you have a leak, your original HPOP was probably good. So I'd air test the HPO system and look for a leak. It is possible you have debris in the IRP, but that's not to common.

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post #3 of 24 (permalink) Old 03-13-2014, 02:21 AM
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Re: hpop problems.

dont listen to the guy above, hes talking out his ass, its a bad ipr. pull it out guarentee the screens blown out. and debris in the ipr is the most common issue since the screen for the oil supply usually tears and people dont know about it.

and just a question tell me how your suppose to air test the hpo system if shop pressure is maxed at 175 psi and the truck builds up to 350 psi?
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post #4 of 24 (permalink) Old 03-13-2014, 03:24 AM
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Re: hpop problems.

Or if your truck is an 05-07 you could have a broken stc fitting it's pretty common also.

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post #5 of 24 (permalink) Old 03-13-2014, 03:36 AM
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Re: hpop problems.

My .02 would be ipr... they will usually build 350ish psi of icp when the ipr screen blows off or ipr is toast


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post #6 of 24 (permalink) Old 03-13-2014, 06:24 AM Thread Starter
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Re: hpop problems.

well before this I had the truck at the local ford dealership for a ficm program. after the program the truck still would not start and they were in the middle of replacing the ipr. When I got there. After the ipr replacement still would not start. they said I had a bad hpop. I made them remove the new ipr and I installed the old one. The screen look good at the time. I air tested every thing but the ipr. When I had her apart. took the old hpop apart. The snap ring that holds the slosh plate in had came loose and let the sloshplate turn to 0 degrees. I unpluged the icp to see if that would let it start with no luck.
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post #7 of 24 (permalink) Old 03-13-2014, 06:29 AM Thread Starter
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Re: hpop problems.

I still have the original icp pig tail. my pressure wasn't jumping around like it would if it was bad.
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post #8 of 24 (permalink) Old 03-13-2014, 06:29 AM Thread Starter
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Re: hpop problems.

it is a 03 model
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post #9 of 24 (permalink) Old 03-13-2014, 11:31 AM
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Re: hpop problems.

03 model, the oring on the top of the jtube is a common leaking area or one of the orings underneath the hpop. And the guy who said its not possible to be a leak...... Yes I've seen multiple trucks at 350 be a hpo leak.
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post #10 of 24 (permalink) Old 03-13-2014, 03:22 PM Thread Starter
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Re: hpop problems.

I had new orings when I installed the pump. looks like i need to drag it back in the shop for another tear down....
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