low power

Discussion in 'Mechanic and Repair' started by DublinLadd, Jun 10, 2001.

  1. DublinLadd

    DublinLadd LawnSite Member
    Messages: 16

    I have a JD 114 that I use for lawn rolling. It starts good and runs good for about 10 mins and then it bogs down....lacking power......if I let it sit for awhile it get better. Ive checked filters and such but found nothing
    Please help
  2. paul

    paul Lawnsite Addict
    Messages: 1,625

    Check the gas cap! If it's vented it might be clogged.
  3. DublinLadd

    DublinLadd LawnSite Member
    Messages: 16

    Tried that, this thing goes along and then has a power loss, motor starts knocking and plinking. I then turn of the PTO and it continues till I throttle down and then she will pur like a kitten. Oh yea by the way I said it was a 114 and its a 140.
    Could or is this a carb problem.(never been rebuilt) The motor was overhauled 2 years ago. Could this be Ignition.
    Thanks in advance
  4. sdwally

    sdwally LawnSite Senior Member
    Messages: 386

    Sounds like a lack of fuel. I would remove the fuel tank and flush it out. You probably had debris floating around in the tank that plug the fuel line port. Units will run fine at idle, under full power for awhile and then lose power, cough and sputter until the engine dies or is returned to idle.
  5. Jman

    Jman LawnSite Member
    Messages: 217

    Another possibility is the condensor is breaking down under heat and use. Change the points and condensor and see if that helps.
  6. DublinLadd

    DublinLadd LawnSite Member
    Messages: 16

    What about a sticky valve or maybe burnt. Would this be possible
  7. sparky600

    sparky600 LawnSite Member
    Messages: 1

    i have a 10 horse kohler in a cub cadet.i had the same problem.it turned out to be a leaking exaust valve.the way i found out was to put air preasure into the sparkplug hole and checked for air leaking out of the muffler,carb.i replaced the valve and ground the seat.it's perfect now.
  8. Fish

    Fish LawnSite Member
    Messages: 139

    Post your engine's model numbers so I know what you have.
    But a simple valve clearance adjustment could have you mowing
    again, but without knowing what you have, I can't add much
  9. 65hoss

    65hoss LawnSite Fanatic
    Messages: 6,360

    put a new fuel filter on!

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