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Blue Smoke On Cold Start

Discussion in 'Lawn Mowing' started by GravelyGuy, Sep 7, 2007.

  1. GravelyGuy

    GravelyGuy LawnSite Silver Member
    from Indiana
    Messages: 2,534

    I have a 26 HP Kawi Liquid Cooled with less than 150 hours. With the first couple of starts in the morning a large puff of blue smoke comes out the exaust. I don't think it has always done this or atleast not this bad.

    Anyone else have this problem?

  2. Richard Martin

    Richard Martin LawnSite Fanatic
    Messages: 14,700

    Oil smoke on startup is usually a sign of bad valve seals. It can also be caused by improper shut down procedures. If it's still under warranty take it back to the dealer.
  3. Stillwater

    Stillwater LawnSite Platinum Member
    Messages: 4,851

    I bet you are using synthetic or multi viscosity oil right? Kawi wants 30 weight straight. and absolutely no synthetic oil until well after 500 hrs.
  4. Triple L

    Triple L LawnSite Senior Member
    Messages: 514

    myn does the exact same thing... big cloud of smoke just on start-up for about 1 second... then it runs absolutely perfect. Always let it idle for about 2-3 min before shut-down.....whats goin on here?
  5. bard

    bard LawnSite Member
    Messages: 29

    Make sure you cut off the fuel supply if you are not going to run for more than 30 minutes. Could be flooding the engine. I started doing this to my 23hp KAW and the problem cleared up.
  6. GravelyGuy

    GravelyGuy LawnSite Silver Member
    from Indiana
    Messages: 2,534

    I am running Valvoline 10W-30. I don't want to take it to the dealer because if they decide that it is not a problem or it is normal then they will charge me out the a$$ like they have before. They are shady like that.

    Also, I always let it idle while I edge, atleast 1 min.
  7. Stillwater

    Stillwater LawnSite Platinum Member
    Messages: 4,851

    try 30 weight kawi wants you to use that anyway
  8. ALittleOffheTOP

    ALittleOffheTOP LawnSite Member
    Messages: 7

    Did you recently change or add oil? Check the level. My KAW smoked once when I overfilled the oil right after a change. Had to drain it and start over...:hammerhead:
  9. firekilr2

    firekilr2 LawnSite Member
    Messages: 163

    Just got 2 new 26 lc kaw's. One smokes and one is fine. Will check oil level in the morning. Fills the trailer with smoke. 10 hours is all.

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