2000 exmark laser missing.

Discussion in 'Mechanic and Repair' started by gnccer150, Dec 10, 2005.

  1. gnccer150

    gnccer150 LawnSite Member
    Posts: 14

    It has a 26 fuel injected kohler and it will miss sometimes with the deck engaged and @ full throttle. If you disengage the deck it will run fine or if you back the throttle down just a tad it will not miss anymore. It seemed as though the e-brake switch was the culprit but bypassed the switch and same problem occured. any help is appreciated.
     
  2. Brianslawn

    Brianslawn LawnSite Silver Member
    Posts: 2,004

    is the O2 sensor clean?
     
  3. gnccer150

    gnccer150 LawnSite Member
    Posts: 14

    Don't know.. Can I just unbolt clean and put back in the manifold.
    thanks in advance
     
  4. 1grnlwn

    1grnlwn LawnSite Bronze Member
    Posts: 1,261

    Check air filter.
     
  5. Jman

    Jman LawnSite Member
    Posts: 217

    How many hours are on the unit? When was the last time plugs and fuel filter changed?
     
  6. gnccer150

    gnccer150 LawnSite Member
    Posts: 14

    1100 hours. Air filter and plugs were both replaced before the mowing season. Unit had the miss all year, but would come and go.
     
  7. Jman

    Jman LawnSite Member
    Posts: 217

    Change the fuel filter and the oxygen sensor.
     
  8. gnccer150

    gnccer150 LawnSite Member
    Posts: 14

    Just did the fuel filter. I will order a 02 sensor and replace. It is cold here so it will be a few months before I can check it out.
     
  9. Oldtimer

    Oldtimer LawnSite Bronze Member
    Posts: 1,458

    The engine has a diagnostic plug. Take it to your dealer and he will be able to find the problem in a few minutes.

    Oldtimer
     
  10. Jman

    Jman LawnSite Member
    Posts: 217

    make sure the dealer has the EFI diagnostic program. Not all dealers have those.
     

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