95 Turf tracer intermittant misfire hot ? kohler

Discussion in 'Mechanic and Repair' started by turf&snow98, Sep 21, 2010.

  1. turf&snow98

    turf&snow98 LawnSite Member
    Posts: 121

    I really need help. I have a 95 turf tracer with a kohler command pro gas engine. It runs great for about 20 minutes cutting, then will all of a sudden start to misfire, it will gradually slow the engine down and usually will just shut off unless i shut the deck off and get it to the trailer quick. Here is what i have done so far, new battery, new stator, new stator regulator, new flywheel, 2 new coils, 2 new plugs, new ignition switch, all kohler and exmark parts. I have good fuel and cold compression. Seems like it might be heat related possibly ?? Usally after it sits for a day or two it fires up, runs perfect for 20 min, then repeats the problem. Sometimes though, even if i shut it off and don't use it for a few days when i go to start it, it miss fires. Any suggestions ? *trucewhiteflag*
     
  2. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    How about a engine model and spec number ?

    Any signs of a oil leak anywhere ?
     
  3. piston slapper

    piston slapper LawnSite Platinum Member
    Posts: 4,240

    I'm guessing you have a 22 or 25 hp engine. (smart spark w SAM module)
    Did you get the SAM module checked ? ( Kohler SAM sequencer about $300)
    Are the coils gapped at .013 ?
    Do you have a good ground to the white wire that bolts to the intake ?
    Do all the connections to the coils fit snugly?

    Replacing parts is the expensive way to diagnose an engine.
     
  4. turf&snow98

    turf&snow98 LawnSite Member
    Posts: 121

    Sorry i was slow to respond. It is a CV22s spec-67516
    I have no idea how to check the SAM moudle.
    The coils are gapped correctly.
    Grounds are good, new eyelets and epoxy sealed.
    The flywheel & stator were replaced because most of the magnets fell off . The coils were both replaced because the wires were arching to the block occosionally (which i though was the problem.)
    Thanks in advance for the help.
     
  5. turf&snow98

    turf&snow98 LawnSite Member
    Posts: 121

    I was out mowing today i think the sam module may be an accurate guess.
     

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