Hpop help

[Steve's red stroker]

I've been battling this truck for awhile I can only get about 250psi while cranking, I changed ipr, icp, and re oringed the injectors and still same bs, after cranking I took the top plug out of the resivior, it was full, but then I watched it bubble for about 30 seconds, is my hpop leaking back to the low pressure side? I have a srp1.1 with about 10,000 miles on it any help would be great

 

[Steve's red stroker]

I just did a buzz test and my tach bounces when each injector buzzes, is that normal?

 

[Arisley]

Yes, that is normal. The buzz is from turning the injector off and on quickly. The truck thinks it is running.

 

[Vader's Fury]

Was the truck running good then just quit? What happened to make you start checking and changing all this stuff?

 

[Powersmokin32]

Check the pump Orings?

 

[Steve's red stroker]

I'll start from the beginning, changed oil and washed truck, next day on my way to work about ten miles from home it bucked a couple times threw a ses and then was fine for about 20 miles bucked again, then a few more times in the next 20 miles, I pulled into work and it died there. Had my brother come with my scanner and a cps, changed the cps it started up & ran for about 1 min then lost icp and died, I then changed icp & ipr and still nothing. Then I swapped in a stock hpop that I have, still nothing, then pulled the valve cover and cranked and then saw #4 injector was gushing out the top, thought that was it so i put the SRP1.1 back in, re-oringed #4 to have it pop #4 again, so I swapped in a different injector, it stArted and ran good for about 10-15 min, then ipr duty started to go up and then it died and wouldn't build above 250. I now pulled all injectors and reoringed them (o-rings all looked good) and still won't go above 250 psi on the scanner. And that's where I'm at....

 

[neverkickn]

I think that at this point the ford diagnostic manual says to disconnect the hpo lines from the head and connect them to a block that has a port for you to relocate your icp sensor to. That will allow you to see if it will make pressure without being hooked to the oil rails.

 

[Wackerjr]

I'll start from the beginning, changed oil and washed truck, next day on my way to work about ten miles from home it bucked a couple times threw a ses and then was fine for about 20 miles bucked again, then a few more times in the next 20 miles, I pulled into work and it died there. Had my brother come with my scanner and a cps, changed the cps it started up & ran for about 1 min then lost icp and died, I then changed icp & ipr and still nothing. Then I swapped in a stock hpop that I have, still nothing, then pulled the valve cover and cranked and then saw #4 injector was gushing out the top, thought that was it so i put the SRP1.1 back in, re-oringed #4 to have it pop #4 again, so I swapped in a different injector, it stArted and ran good for about 10-15 min, then ipr duty started to go up and then it died and wouldn't build above 250. I now pulled all injectors and reoringed them (o-rings all looked good) and still won't go above 250 psi on the scanner. And that's where I'm at....

Wiggle the harness going to the IPR, see if it is shorted out....

Then I would swap the stock pump back on.... see if it starts....

Remember with pulling injectors, and swapping pumps you will need to crank it a while... and if the PCM does not see 12v it aint going to start either.... get a battery charger on it while doing all the cranking...

also on edit.... You did make sure ALL the injectors were seated... right....

 

[Steve's red stroker]

I was getting ready to swap hpop's, and went to break loose the gear bolt, and it was already loose. I must not have tightened it enough. Should I use a drop of loc tite on the bolt?

 

[Steve's red stroker]

Wiggle the harness going to the IPR, see if it is shorted out....

Then I would swap the stock pump back on.... see if it starts....

Remember with pulling injectors, and swapping pumps you will need to crank it a while... and if the PCM does not see 12v it aint going to start either.... get a battery charger on it while doing all the cranking...

also on edit.... You did make sure ALL the injectors were seated... right....

Yes I checked all the injectors, and I have a charger on it, thanks for the advice, when it tightened the bolt on the hpop, I tightened it till the engine cranked then I gave it a couple hits with my hand to get it a little tighter.

 

[Wackerjr]

LOL Forgot how many people dont get the gear on straight....

It happens...

NO loctite... it should be torqued to 90ftlbs... but it is also self tightening with the engine rotation... you should be good now...

 

[Steve's red stroker]

All is good got it running, took it for a spin and two miles down the road I suddenly lost icp and the truck died. I got out and checked oil and looked it over everything checked out ok. I unplugged the icp sensor, cranked it showed 2100psi on the scanner it started then it went to 800 then all of a sudden 0 then it died. Cranked it again and again then it started and was at 900 so turned around and headed for home, then it was fluctuating between 700-1700 with it unplugged, I turned into the driveway it hit 400 ran for a bit then died and I coasted in. WTF now? PCM?

 

[Steve's red stroker]

Just got back to my truck today, made some hoses up to pressurize the heads. Put shop air to it and #7 was pouring air out the oil return spout, so I swapped it with another one I have put air to it again and that injector along with #5 leak slightly out the spout. Is it time for new injectors?

 

[2000wa250]

You had it unplugged and the pressures are that much all over the place? I would assume that would indicate wiring since you should be seeing default calculated values not an actual reading from the sensor (it is unplugged after all)

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[Steve's red stroker]

You had it unplugged and the pressures are that much all over the place? I would assume that would indicate wiring since you should be seeing default calculated values not an actual reading from the sensor (it is unplugged after all)

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I checked the wiring and all seemed fine, does the default adjust based on rpm?

 

[Steve's red stroker]

Swapped in injectors in #5. & 7 from another spare engine I have and that side held pressure checked the evens and had #4 leaking a bit to changed that and now it runs great. Had it out for about 2hrs and it ran flawless