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No Power

Discussion in '7.3L Powerstroke Diesels' started by trythis, Jun 9, 2019.

  1. trythis

    trythis Registered User

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    Thank you for your time and interest I will be working on this in what ever time I can find and post anything new.
     
  2. trythis

    trythis Registered User

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  3. 79jasper

    79jasper Chickenhawk

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    They were likely holding the ebpv open. Lol

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  4. trythis

    trythis Registered User

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    yes you got it I have been using the truck like that for a bit now. local stuff have run about a tank of fuel through it. runs okay, smooth, but the problem now is it is still getting oil past the orings on the injectors. and did replace the orings

    It seamed to me to be pretty simple change but i must have missed something somewhere any thoughts?
     
  5. 79jasper

    79jasper Chickenhawk

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    I would clean out the bores. You can actually buy a brush set for cleaning them out. Plus making sure the bottom is clean where the copper washer goes.
    Why do you think oil is still getting past?

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  6. trythis

    trythis Registered User

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    I think oil is getting past because the fuel in the tank is dark and the oil consumption is vary high.
    Would you tell me more about that brush?
     
  7. trythis

    trythis Registered User

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    20190629_200210.jpg
     
  8. 79jasper

    79jasper Chickenhawk

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  9. trythis

    trythis Registered User

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    OK back to work on this beast. pulling the injectors and looking for someplace that would be letting oil get past into the fuel. The way i get it the top third of the injector is oil middle is fuel bottom coolant. So i am looking mainly at the second o ring down and clean in that sealing area on the head. That is where it would leak. Don't think those oil seals even seal in the cup. still working on it but I think maybe i just didn't torque them down tight enough. Your thoughts please.
     
  10. 79jasper

    79jasper Chickenhawk

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    Coolant doesn't go through the injectors. Oil comes in between the top and middle oring. Fuel comes in between the middle and bottom oring.
    Coolant does flow around the injector cup.

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  11. trythis

    trythis Registered User

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    got r done for now anyhow . have a torque wrench IN LB on the way . just don't see any reason for the injectors to be leaking oil into the fuel .
    the cups where a little dirty,but the oil is sealed above that area. so i am hoping I just need to get them a little tighter.
     
  12. trythis

    trythis Registered User

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    Ok so the middle o ring is the one that would be letting oil into the fuel. Right? pink alliant
     
  13. 79jasper

    79jasper Chickenhawk

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    That is correct. I forget the torque requirements for 7.3 injectors, but I know when I did them on my 6.0, it took a lot more to hit the number than expected. Hand to put a fair amount of force. Wouldn't be doing that with a standard length 3/8 drive ratchet.
    Personally, I got mine at harbor freight.

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  14. greenskeeper

    greenskeeper Full Access Member

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    7.3 PSD injector hold down bolt is 10 ft/lbs
     
  15. trythis

    trythis Registered User

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    yes that is why I got the inch lb wrench 10 ft lb is pretty touchy when mashing o ring and copper. but i am sure I got that part right
    here are the results
    after it ran long enough to get all the air out i cleaned it up and drove it hard for 30 miles used 1 qt of oil. Pictures show clean valley no leaks found there. thinking it is burning it.
    Can I loose oil through the turbo and burn it clean enough i don't see much in the exhaust?
    IMG_20190910_085020156.jpg IMG_20190910_085257642.jpg
     

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