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At a complete loss right now.

5531 Views 290 Replies 7 Participants Last post by  bismic1, 
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Need some help desperately. I have a 2003 f350 with the 6.0 in it. I was having issues with it and found that the stand pipes and lines were bad. The truck then started but ran like trash. Tested Everything and it would only have 1500psi wot. So I decided I was done playing games I installed a new hpop, ipr, ipc (both with new pig tails.) cleaned everything really good. Now the truck cranks but won’t start. Gets up to 85% while cranking. When the icp is plugged in it reads 10psi while waiting once cranking it only goes to 280 to 320. Definitely not enough pressure to fire it. When I unplugged the icp still no start. Could I have wired the icp pigtail wrong. Did one wire at a time following off the old icp. What could it be. Since it still don’t start with the icp unplugged. Possible pcm maybe. Please help. Need this for Monday for work
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Yes. It can be put in a bind, which can cause it to hang open.

FYI - not having luck separating my spare IPR. It is in there tight! I'm asking a friend if he documented the threads when he did his disassembly.
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Also, if you tighten too hard the threads on the lower portion and the pump cover might seal tighter than the threads between the bottom metal and the IPR top works (nut).

So maybe two issues at play here.

EDIT - I was given the general torque range - Do NOT exceed 25-30 ft lbs. I'll also send my forum friend a link to this thread (I don't recall if he has an account on this forum).
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Yup, I do
That part in the pump housing is threaded in there, but only the oring should be holding
so you "may" be able to grip it with small vice grips -- pointy nose type would be my choice
just dont go crazy on the threads -- but they do need to grip, not slip

also be super careful not to lose the tiny needle valve from that part

I have a teardown thread over on Powerstroke that may interest you
www.powerstroke.org

6.0 IPR Disassembled and Analysis

I read a lot about the IPR valve and "how it is supposed to work", but sadly there is not a lot of accurate information about the insides of the valve or the operation. I was fortunate to get a valve from a member here - @hotrod3949 . The valve was questionable in operation on his truck. I...
www.powerstroke.org www.powerstroke.org
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And if all else fails, grip it with whatever and buy a new IPR. I would rather do that than remove the turbo, but that is just me and my bad back, lol.
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bismic1 said:
And if all else fails, grip it with whatever and buy a new IPR. I would rather do that than remove the turbo, but that is just me and my bad back, lol.
Click to expand...
that’s what I was thinking of doing that cause I’m gonna get a new Ipr just in case I damaged this one by over cranking on it.
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I am GUESSING that the threads are M22x1.5. Nothing in NPT fits.

www.amazon.com

Amazon.com: PartLogix M22x1.5 to 1/2 NPT Brass Bushing Reducer Adapter (Pack of 1) : Industrial & Scientific

Amazon.com: PartLogix M22x1.5 to 1/2 NPT Brass Bushing Reducer Adapter (Pack of 1) : Industrial & Scientific
www.amazon.com
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bismic1 said:
I am GUESSING that the threads are M22x1.5. Nothing in NPT fits.

www.amazon.com

Amazon.com: PartLogix M22x1.5 to 1/2 NPT Brass Bushing Reducer Adapter (Pack of 1) : Industrial & Scientific

Amazon.com: PartLogix M22x1.5 to 1/2 NPT Brass Bushing Reducer Adapter (Pack of 1) : Industrial & Scientific
www.amazon.com
Click to expand...
Got it thank you. Ordering that now
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Oh shoot - I have not proven it out, it is just a guess!

Sorry if I conveyed more confidence!

I did fit it into a metric template and it did fit the 22MM hole.
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Well to no avail I air tested the system and no leaks. Put it all back together then dumped 2 quarts of oil through the filter to hopefully help it. I cranked it for about a minute for 4 times and still nothing. (Kept the icp unplugged). Then I said screw it. I gave it two shots of ether (I hate using it). And it’s didn’t even try to fire up with the ether. Any of y’all in the poconos of pa wanna make some loot lol.
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Where did you air test it from?
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bismic1 said:
Where did you air test it from?
Click to expand...
the Ipr I was able to get the piece out tonight and went through there
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So you tested all the system EXCEPT the old IPR by doing that. That usually means the old problem was a bad IPR and a new one should fix it.

Did you install a new IPR?
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bismic1 said:
So you tested all the system EXCEPT the old IPR by doing that. That usually means the old problem was a bad IPR and a new one should fix it.

Did you install a new IPR?
Click to expand...
yes I did. It’s doing the exact same thing. Monitor is showing 300 psi when cranking and the Ipr is going to 85% cranking and 15% koeo
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Well .......

If the ICP sensor is accurate, and
if there are no leaks, and
if the IPR is good, and
if the pressure is still low, and
if there is no issue with the low pressure oil system feeding the HPO system,

then it is the HPOP.
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Are you running an OEM oil filter cap and OEM filter?
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Dannie1234 said:
yes I did. It’s doing the exact same thing. Monitor is showing 300 psi when cranking and the Ipr is going to 85% cranking and 15% koeo
Click to expand...
This is with the ICP disconnected ? or not

and what is the Fuel Pulse Width ?
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bismic1 said:
Are you running an OEM oil filter cap and OEM filter?
Click to expand...
yes to both things being oem. How would I check the low pressure system. Now that I think about it my dash gauge would drop to zero When idling but the truck wouldn’t shut off. It takes about 3-5 seconds to fill up the filter housing when I hold down the drain plug and have someone crank it
HydroTek said:
This is with the ICP disconnected ? or not

and what is the Fuel Pulse Width ?
Click to expand...
Yes the icp was disconnected and still wouldn’t go. I plugged it in now. I can now monitor the pressure. I got it to build up to 400psi

I was having zero fpw it’s now bouncing around and I’ve seen it hit I believe 6.6. I will take a pic of the monitor maybe a video of it so y’all can see it when I’m cranking it. Have to take the kid to the bus stop and gonna let charge up some
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Ok got some pics and some videos. That last one is after I stop cranking
Automotive lighting Automotive tire Motor vehicle Automotive design Automotive exterior

Vehicle Automotive design Car Motor vehicle Auto part

Handwriting Automotive lighting Motor vehicle Automotive design Gauge

Vehicle Car Speedometer Steering part Motor vehicle
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So apparently I can’t load videos here. But when I stop cranking the icp pressure drops to 50 and slowly down to about 23
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Ok I got it to fire up. Runs rough very little white smoke (hasn’t run in over week so I expected that). The throttle response is next nothing. Wot it wouldn’t even get over 1200 rpm Then it would stall out Took a lot of cranking but it started. Now while cranking my monitor is showing 3300 psi
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