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8V92 Coolant in Oil (pictures)

Discussion in 'General Industry Questions' started by Ruger_556, Sep 25, 2021.

  1. Ruger_556

    Ruger_556 Well-Known Member

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    Location:
    Pacific Northwest
    Working on an 8V92TA (1994 model with DDEC) and I've got coolant in the oil, I pulled the pan off and there's coolant running down at the back of the engine, the majority of the coolant is coming down the RH side but there is some dripping on the LH side as well from the same place (the LH head gasket was replaced a few years ago). There is no coolant dripping from the airbox drains and there's no oil in the coolant.

    I don't hardly ever work on these so want to make sure I'm going in the right direction. IMG_20210920_113302.jpg
     
  2. Truck Shop

    Truck Shop Senior Member

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    Put 12 lbs pressure against the cooling system and you will probably see a steady flow. Either way it's probably heads off.
     
  3. Vetech63

    Vetech63 Senior Member

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    I’m betting a water jacket oring has folded.
     
  4. Truck Shop

    Truck Shop Senior Member

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    That sounds like a double cheeseburger bet.:)
     
    mg2361 and Vetech63 like this.
  5. Bluox

    Bluox Senior Member

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    Pull the valve covers when you pressurize the cooling system and check around the injectors coppers.
    Bob
     
    56wrench, John C., skyking1 and 2 others like this.