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Old 05-02-2013, 08:08 AM
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4 weeks still no start

Hi everyone,

I've got a problem thats had my truck garaged for a month.

I was pushing it hard one day, and it died under wide open throttle. No start afterward.

I went through all the "obvious stuff", and finally determined there is insufficient hpo to actuate the injectors.

HPOP is capable of making 3600 psi, I deadheaded one outlet and tapped a gauge into the other, with the icp hooked up it made 3600, with the icp unplugged it made 1900.

When I reattach the hpo lines to the heads, and tap my gauge into either head, I'm only seeing 200 psi there, and it takes 7-8 seconds of cranking to build that...

Obviously the injectors are not fueling, due to inadequate hpo pressure. Where could this oil be going?

I replaced the injector o-rings, no external leaks, no smoke at all. Cranking engine with valve covers removed, there is no oil spilling from injectors, or around them.

If oil was going into combustion chamber I would have some blue smoke, correct?

Coolant in overflow reservoir looks normal.

What is going on? Thanks for the help!
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Old 05-02-2013, 09:40 AM
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Pull any codes?

Did you try starting it with the ICP sensor unplugged? Sounds like it could be an IPR...
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Old 05-02-2013, 10:02 AM
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Quote:
Originally Posted by layson View Post
Pull any codes?

Did you try starting it with the ICP sensor unplugged? Sounds like it could be an IPR...
No codes, tried with icp unplugged, in my head I've ruled out anything with the pump/ipr/icp because I had pressure from the pump when I deadheaded it. I've got a Porta power I'm going to plumb into the oil gallery and see what kind of pressure it will hold. That will tell me if there's a leak in the head or not. If you have any other ideas don't be afraid to spit them out. I'm kinda at a loss at this point. Passed the injector buzz test too.
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Old 05-02-2013, 12:25 PM
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Wow no codes? How are the batteries doing with all the cranking? Make sure you got a charger on them.

It doesn't sound like a leak in the head. How did you check the pressure of the pump?
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Old 05-02-2013, 12:34 PM
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No codes at all. I've got a smart charger keeping my batteries up to snuff. On the hpop, I plugged one outlet and put a gauge on the other.
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Old 05-02-2013, 12:36 PM
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So you unhooked the two lines off the HPOP and plugged one and put a gauge on the other then cranked the truck over. Just want to make sure I got that correct.
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Old 05-02-2013, 12:46 PM
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Usually when the truck shuts off/dies and won't start you will see the typical cam sensor code, ICP out of range, and a few others. What are you pulling codes with?

This is kind of what mine was doing when my IPR went out. Truck wouldn't make enough ICP to start at 400 psi. Mine just shut off while driving down the road.
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Old 05-02-2013, 01:08 PM
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Originally Posted by layson View Post
So you unhooked the two lines off the HPOP and plugged one and put a gauge on the other then cranked the truck over. Just want to make sure I got that correct.
Yes, that's correct. ;-)
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Old 05-02-2013, 01:09 PM
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Quote:
Originally Posted by layson View Post
Usually when the truck shuts off/dies and won't start you will see the typical cam sensor code, ICP out of range, and a few others. What are you pulling codes with?

This is kind of what mine was doing when my IPR went out. Truck wouldn't make enough ICP to start at 400 psi. Mine just shut off while driving down the road.
I don't have a scanner, I had a coworker bring over a snap on tool. I dont know what it was, an expensive unit though.
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  #10  
Old 05-02-2013, 01:12 PM
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I've tried 3 different ipr's. Mine of course, also one out of a spare engine, the other out of a running truck.
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