Metalic Snap Noise in Kohler

Discussion in 'Mechanic and Repair' started by Scagmower48, Jul 2, 2008.

  1. Scagmower48

    Scagmower48 LawnSite Senior Member
    Messages: 430

    I have a 14 H.P. Kohler Command on my scag which seems to lack power. I noticed upon starting the mower, it runs rough and lacks power until I hear a metalic snap noise which I think is the compression release disengaging and then the engine seems to run fine. Has anybody had any problems as stated with a compression release sticking on this type of motor and a repair procedure.

    S DIAMOND LawnSite Member
    from South
    Messages: 108

    That could actually be a valve sticking. But wouldn't rule out the decomp.

    Pull the valve cover and check your valve clearances. Remove the plug and turn it over. Examine the valve action. Pay attention to your exhaust valve.

    You can get the repair manual free at Kohler's website.
  3. Scagmower48

    Scagmower48 LawnSite Senior Member
    Messages: 430

    thanks for your response but it is not the valves
  4. kawasaki1

    kawasaki1 LawnSite Member
    Messages: 108

    does it go away when the engine reaches about 900-1100 rpm? if so, it is the compression release and it's working properly.
  5. VegetiveSteam

    VegetiveSteam LawnSite Senior Member
    Messages: 296

    Does it only do this when the engine is cold? If so what weight oil are you running in it? That engine should have 10w30 oil in it. If by chance you are running straight 30 weight I would try changing to 10w30 and see if the problem goes away. If the problem continues then they only fix may be changing the cam.

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