Cummins turbo oil leak

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Derekdxn, Oct 26, 2011.

  1. Derekdxn

    Derekdxn Bobtail Member

    4
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    Oct 26, 2011
    Athens, OH
    0
    I just had an in-frame done on a cummins big cam 350. Now I have oil leaking from the flange between the turbo and the exhaust pipe. I plugged the oil line feeding the turbo and ran the engine just long enough to see if oil would still come out and sure enough, it did. What all could I be up against.
     
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  3. Les2

    Les2 Road Train Member

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    coming from the head. valve seats?

    rings not seated in?
     
  4. Derekdxn

    Derekdxn Bobtail Member

    4
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    Oct 26, 2011
    Athens, OH
    0
    Not sure what the problem is. Thought maybe I could get a little insight from someone else because I'm no diesel mechanic.
     
  5. Les2

    Les2 Road Train Member

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    If its a great deal of oil and it doesn't quit you probably have a problem.

    Is the motor broke in yet? How many miles since O'haul?
     
  6. Derekdxn

    Derekdxn Bobtail Member

    4
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    Oct 26, 2011
    Athens, OH
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    Yes, it's a pretty good stream of oil. I've only ran it a short way down the road since the o'haul so it's far from broken in yet.
     
  7. Les2

    Les2 Road Train Member

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    I'd get ahold of the place that built it cause something don't seem right! If you do run it some to break it in keep a real close eye on how much oil its using. Hate to see you run it dry and burn it up!
     
    Derekdxn Thanks this.
  8. Low side

    Low side Bobtail Member

    19
    3
    Oct 18, 2011
    Joplin missouri
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    Shouldn't leak any at all from turbo with fresh over haul wouldn't run at all I'd take back to shop an make them look at sounds like rings lined in line an not off set to look like an x if keep running engine will run away from
    U after sucking oil
    In air to air
     
  9. Low side

    Low side Bobtail Member

    19
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    Oct 18, 2011
    Joplin missouri
    0
    Used to work On them for 15yrs
     
  10. Derekdxn

    Derekdxn Bobtail Member

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    Oct 26, 2011
    Athens, OH
    0
    Thanks for the concern. I'm having it looked into tommorrow, but I appreciate the help.
     
  11. bender

    bender Road Train Member

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    Jul 20, 2010
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    You can separate the exhaust manifold from the cylinder heads to isolate which hole is passing oil. Find the wet exhaust port.
     
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