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12.5 liter Detroit with blow-by

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Floyd, Sep 17, 2010.

  1. Sep 17, 2010 #1
    Floyd

    Floyd Light Load Member

    163
    24
    Jun 1, 2010
    Central Maine
    0
    We have a 1999 John Deere forage harvester with a 450 hp 12.5 liter Detroit in it. It has 3400 hrs on it. It runs like a top, but recently it seemed to have suddenly developed blow-by that seems a bit excessive. There is a fair amount of vapor and blow-by coming from the crankcase vent tube. Also there is oil dripping from the tube that was never there before.
    3,400 hrs. seems like it's too early for the rings to be bad. I'm thinking it may be the turbo seals allowing pressure back into the base.
    Does anyone have any experience with this engine, and is this common on this engine?
    Thanks
     
    Floyd, Sep 17, 2010
    Floyd, Sep 17, 2010
    #1
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  3. Oct 22, 2010 #2
    TCool4118

    TCool4118 Bobtail Member

    7
    3
    Oct 22, 2010
    Waynesville, North Carolina
    0
    I can only tell you that you dont want to stand too close to a Series 60, they are liable to throw a rod at anytime, you either get a good one or a bad one, theres not a whole lot in between, every Detroit i've ever seen has a lot of blow by
     
    TCool4118, Oct 22, 2010
    TCool4118, Oct 22, 2010
    #2
  4. Oct 22, 2010 #3
    Big Duker

    Big Duker "Don Cheto"

    2,921
    2,862
    Sep 18, 2007
    Weatherford, TX
    0
    With out a doubt the dumbest quote of the month. Sure must be a lot of suckers out there running all those metal slingers. They do tend to have a lot of blowby or slobber.
     
    Big Duker, Oct 22, 2010
    Big Duker, Oct 22, 2010
    #3
    25(2)+2, ampm wayne, rollinsmoke and 3 others Thank this.
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