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Detroit 12 V 92 Turbo smoke out breather

Discussion in 'Generators/Gensets' started by mattyt1984, Jun 2, 2018.

  1. mattyt1984

    mattyt1984 Well-Known Member

    Jun 5, 2011
    New York
    The engine has 4 separate heads only one head does smoke come out the breather off the valve cover. It smokes more out the breather under load and very little at idle. Only the one head does this. There is no smoke coming out other breathers and no noticeable out of exhaust. What could cause this?
  2. Tenwheeler

    Tenwheeler Senior Member

    Dec 16, 2016
    Take that cover off. Run it and see. Bad exhaust valve guide?
    Simon C and kshansen like this.
  3. Neily

    Neily Well-Known Member

    Sep 6, 2013
    Leaking fire ring might be a possibility