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Thread: KFX won't run.........

  1. #1
    Join Date
    Oct 2004
    Location
    Northern Western Washington
    Posts
    599

    KFX won't run.........

    Removed the oil injector, dropped down to an 87.8 MJ, and the little pile O'smell falls on is tail? I installed a 90 MJ, same result

    Any clear headed thoughts?
    Charlie Don't Trike

    85' ATC 350X
    85' YTM 225DR
    85' ATC 250SX
    85' ATC 200X
    84' ATC 200 autoX
    85' ATC 70
    85' YT 60
    83' ALT 50

  2. #2
    Join Date
    Mar 2004
    Location
    East Springfield Pa.
    Posts
    2,370
    Hmmm,
    Maybe a better explaination of "falls on it's tail".
    You mean the rider??? LOL
    2000 GNC 5N\
    2001 GNC 9N \ 40+ class
    2004 GNC 9N /
    2014 rock crusher "GO tortoise GO!"
    2016 Byrd Rooster
    Father of the "11" time National champion,and worlds fastest woman ATV racer
    A few fast LT80's
    250R~300cc's
    300ex
    350 Rancher
    Kymco Mongoose
    Survivor of the 12 Hours of ATV America 04 and 05

  3. #3
    Join Date
    Oct 2004
    Location
    Northern Western Washington
    Posts
    599
    unfortunaly it wasn't rider error, 2/3 thru the straights the bike would run out of power. I watched his foot, he wasn't even close to the brake pedal.

    Now I have a hot 6 year old! He wants to unload the machine (that is only 3 months old). He thought about it a bit more and asked me to bolt the injector back on.
    Charlie Don't Trike

    85' ATC 350X
    85' YTM 225DR
    85' ATC 250SX
    85' ATC 200X
    84' ATC 200 autoX
    85' ATC 70
    85' YT 60
    83' ALT 50

  4. #4
    Join Date
    Oct 2004
    Location
    Northern Western Washington
    Posts
    599
    what are the possibilities that 40:1 is too lean, and the rings are not sealing good at 2/3 straight away. Should I try going to 32:1 and test that theroy?
    Charlie Don't Trike

    85' ATC 350X
    85' YTM 225DR
    85' ATC 250SX
    85' ATC 200X
    84' ATC 200 autoX
    85' ATC 70
    85' YT 60
    83' ALT 50

  5. #5
    Join Date
    Mar 2004
    Location
    East Springfield Pa.
    Posts
    2,370
    It'll run the same with or w/o the injection.
    I do recommend 32:1 but feel that isn't the problem.
    Is it spitting and sputtering on top end?
    Still do it w/ 92.5 main jet?
    2000 GNC 5N\
    2001 GNC 9N \ 40+ class
    2004 GNC 9N /
    2014 rock crusher "GO tortoise GO!"
    2016 Byrd Rooster
    Father of the "11" time National champion,and worlds fastest woman ATV racer
    A few fast LT80's
    250R~300cc's
    300ex
    350 Rancher
    Kymco Mongoose
    Survivor of the 12 Hours of ATV America 04 and 05

  6. #6
    Join Date
    Oct 2004
    Location
    Northern Western Washington
    Posts
    599
    Yes, sputtering on top. I haven't put the 92.5 back in it yet.

    I did block up the rear end, bring it to WOT and pull the choke, it sputtered reall bad. That is why I was thinking going heavier on the mix ratio.
    Charlie Don't Trike

    85' ATC 350X
    85' YTM 225DR
    85' ATC 250SX
    85' ATC 200X
    84' ATC 200 autoX
    85' ATC 70
    85' YT 60
    83' ALT 50

  7. #7
    Join Date
    Oct 2004
    Location
    Northern Western Washington
    Posts
    599
    I drained the 40:1 and replaced it with 32:1. It will continue to pull lap after lap. Here he is testing his Works Shocks today. It runs a whole lot better
    Attached Images Attached Images
    Charlie Don't Trike

    85' ATC 350X
    85' YTM 225DR
    85' ATC 250SX
    85' ATC 200X
    84' ATC 200 autoX
    85' ATC 70
    85' YT 60
    83' ALT 50

  8. #8
    Join Date
    Mar 2004
    Location
    East Springfield Pa.
    Posts
    2,370
    Cool pic
    2000 GNC 5N\
    2001 GNC 9N \ 40+ class
    2004 GNC 9N /
    2014 rock crusher "GO tortoise GO!"
    2016 Byrd Rooster
    Father of the "11" time National champion,and worlds fastest woman ATV racer
    A few fast LT80's
    250R~300cc's
    300ex
    350 Rancher
    Kymco Mongoose
    Survivor of the 12 Hours of ATV America 04 and 05

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