Kohler command 20 hp fouling plug low hours

Discussion in 'Mechanic and Repair' started by mcambrose, Jan 21, 2008.

  1. mcambrose

    mcambrose LawnSite Senior Member
    Messages: 518

    I have a 2003 walker mower with 267 actual hours. It is already burning a lot of oil on the front cylinder. I pulled the plug today and it was covered with carbon. The back plug looks great. I just rebuilt one of my other Kohler engines with same problem, but it had almost 900 hours. The 900 hour engine had a small oil leak that covered the fins of front head and clogged them up with dirt. The heat made the oil ring fail. I looked and the front fins on the 267 hr motor were clean. Any other idea why the engine might have started burning oil so soon. I am assuming that the oil rings have failed. just like the other engine.
  2. Landrus2

    Landrus2 LawnSite Fanatic
    Messages: 5,020

    Some thing is defiantly wrong 900 hours is very little
    But 360 is out of the question don’t you have a one year warranty:drinkup:
  3. lucforce

    lucforce LawnSite Member
    Messages: 223

    BLOWN head gasket.
  4. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,029

    Sounds like the classic blown head gasket at the oil return port, A cylinder leak-down test will verify this.
  5. shopmanual

    shopmanual LawnSite Member
    from Indiana
    Messages: 13

    Makes sense to me. It seems like a lot of the newer v-twins burn a decent amount of oil. My friend had a Briggs Intek that would go through tons of oil.
  6. sawman65

    sawman65 LawnSite Senior Member
    Messages: 754

    blown head gasket kohler had problems with this.you cant hear it but its there there is a kit to fix this. and do them both the other is rite behind the first one. the kit has both the gaskets you need to fix it also.

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