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powerstroke motor rear oil leak

Discussion in 'Truck & Equipment Repair' started by alsam116, Dec 28, 2011.

  1. alsam116

    alsam116 Senior Member
    Messages: 217

    hey everybody i have a 99 7.3 and i went out the other day to start the truck in the drive and noticed a small puddle of oil under pan. it is leaking between the oil pan and the trans. what the hell could this be? and how much $$$$ do you think it will be, the way it looks the tranny has to come out to get to it but im only a half as mechanic.

    Thank you in advance,
    Alex
     
  2. rpm-inc

    rpm-inc Junior Member
    Messages: 22

    There is a hole on the top back of the block that lets oil in the valley run down the back of the engine. Its probably just an oring.
     
  3. alsam116

    alsam116 Senior Member
    Messages: 217

    so if i take the sheild off i should be able to get to it easily? i sure hope thats all it is that will be easy to fix.

    thank you
     
  4. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,962

    more than likely its an o-ring for the hpop system. like rpm said theres a hole at the back of the block up top, the oil is prob leaking into the valley of the block and coming out the hole...look up top on the block for the leak
     
  5. diesel dave 04

    diesel dave 04 Senior Member
    Messages: 155

    Yep what they said The leak is up in the valley seen this many times and every one thinks Rear main seal.
     
  6. NICHOLS LANDSCA

    NICHOLS LANDSCA PlowSite Veteran
    Messages: 4,305

    Like others have said it's probably the HPOP o-rings, you can get them a lot cheaper online but make sure you get Viton just go to some Powerstroke forums or google it
     
  7. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,962

    I think I got mine from powerstrokeorings.com? The only special tool is the disconnect tool. I would recommend getting it too.
     
  8. Bigfoot Brent

    Bigfoot Brent Senior Member
    Messages: 202

    It could also be the o rings at the turbo, but it won't be the rear main seal. I got mine from dieselorings.com.
     
  9. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,962

    That's the site Brent I couldn't remember. And yes it could be the turbo as well. Forgot bout those buggers as well.
     
  10. rpm-inc

    rpm-inc Junior Member
    Messages: 22

    dieselorings.com Great prices and customer service.
     
  11. alsam116

    alsam116 Senior Member
    Messages: 217

    thank you guys for all the responses. i just ordered everything needed from dieseloring.com
    am i ok to drive the truck as long as the oil is full, i hope so ive been driving for 3 day already.
    thanks agin for all the quick and help,
    alex
    LET IT SNOW
     
  12. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,962

    Yea should be fine. Just check the oil often !!
     
  13. alsam116

    alsam116 Senior Member
    Messages: 217

    yep i will do...thanks again for the fast responses.
     
  14. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,962

    No bother. :)
     
  15. EdNewman

    EdNewman Senior Member
    Messages: 254

    Don't recall details but we had this with some of our trucks. I want to say something o-ring on turbo oil feed? Does that make sense? Too many 6.0l problems since to r,ember.
     
  16. BPS#1

    BPS#1 2000 Club Member
    Messages: 2,407

    Bob @ http://www.dieselorings.com/ is the man.


    Top side oil leaks can come from two plugs installed near the rear of the engine into the head.
    Its an oil drain port or some thing. If one of the plugs comes looks it can leak a lot of oil and cause
    all the symptoms mentioned. I've already taken a turbo off to check o rings and then found it was that plug had gotten loose and messed up the plug o ring a bit.
    Its a specially designed o ring and just getting one from an o ring kit at napa is not going to solve the problem.
     
  17. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,962

    the plugs at the rear of the heads will not leak between the bellhousing and the block. i removed these plugs to drain oil from the hp system and put a pan right under it. any leak from the back of the block will leak directly down, theres nothing blocking it. he has a hpop oil leak, o-rings from up top of the motor, not from the rear of the heads.
     
  18. BPS#1

    BPS#1 2000 Club Member
    Messages: 2,407

    Not AT the rear. Near the rear, visible in the valley of the motor.
    One on each side.
     
  19. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,962

    ok,,i know which ones your talking about. I personally have never seen those leak, nor have i eveer replace those o-rings. it's usually the lines going to the heads from the hpop. that leak.
     
  20. no lead

    no lead PlowSite.com Addict
    Messages: 1,308

    there is a very good chance it is the high pressure oil pump. it will leak right down the back of the motor just like a rear main.