6.0l driving me up a wall please help

DaveBen

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I have one. 2004, 6.0, 4x4, torque flight, and door locks.
 

Dsl_Dog_Treat

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Yeah 900 psi no start.
I know 7.3 and 6.0 are really similar but I'm might be going back to my 7.3 idi easy to figure out.

I'm mentally tire and physical tired after removing all the way down to the hpop and remove both vavle covers.

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If that's cranking psi, then you've got enough to fire the injectors, but that number is still low if cranking. Sounds like you're still dealing with a HP oil leak. I'd suspect the upper injector orings and or the oil rail ball tube orings as well. That year doesn't have dummy plugs but they do have stand pipes and those orings can and do wear as well.
As far as far as the no start issue at 900 psi, I'd like to see if the pcm is seeing a crank signal cold and hot as well.
Extended cranking will throw a cam code from a no fire situation.

Now what I haven't seen yet is what oil filter and filter cap are you using. Non OEM filters and caps will cause drain back situations and oil starvation issues as well due to their shorter filters allowing the canister drain back valve to remain open some and will cause hard start issues.
 

rustygold

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I only use motorcraft for parts on my fords because they already perform the best with it.

When it started up it showed 1500 psi while cranking. I'll find out later today on the number are plus crankshaft position sensor.

I should of bought a lab scope when I had the chance you can look at icp irp ckp ficm all at once with out the computer telling you what it is.

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rustygold

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Oh I forgot to post this when I pull off the hpop cover but I seen this on my brand new ipr
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Dsl_Dog_Treat

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Holy CRAP!!! :eek: :eek:
You need to pull the oil cooler and check the status of the HPOP sump screen before you go any farther!!
That IPR valve is done for. You've got contaminants getting into the HP oil system and that right there is causing the starting issues as the pintle in the IPR valve isn't functioning properly.
 

rustygold

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So after messing with it for a fee days it can start but once that happens it start to clogg back up makes senses.

That would be why I read low psi at 84% duty

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Dsl_Dog_Treat

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So after messing with it for a fee days it can start but once that happens it start to clogg back up makes senses.

That would be why I read low psi at 84% duty

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Yeppers.
 

rustygold

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Makes me feel better just have to remove the intake one more time.

Knowing that mean my hpop was probably trash before I replace makes me feel that I did waste 400 something dollars

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79jasper

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You did replace hpop? Or no?
If not yet, I recommend getting ahold of cncfab and get a mb diesel hpop.

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rustygold

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I did replace it myself but should of done more diagnosing it but it's all new to me.

Did some research on international hpop it came in 7.3 and 6.0 that's it changed back to high pressure fuel like IDI are and used electronic to open the injectors

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79jasper

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Correct. The 6.4 and 6.7 are common rail.
I think you can sort of flush the hpo system.

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rustygold

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Yeah I think so to there are 1/4 inch ports on the rails the I can open up to push the old oil out with air and new oil.

If not it goes into the injectors and screws them up.



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Dsl_Dog_Treat

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Yeah I think so to there are 1/4 inch ports on the rails the I can open up to push the old oil out with air and new oil.

If not it goes into the injectors and screws them up.



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I'd advise against flushing by that method as you're going to get messy high pressure oil out those bleeder ports if you intend to purge that way. Best to remove the rails and empty thru the ball tubes.
 

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