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Thread: 1980 ATC 110 runs like crap! HELP!

  1. #1
    Join Date
    Jan 2008
    Location
    Amsterdam NY
    --
    44

    Unhappy 1980 ATC 110 runs like crap! HELP!

    Hi I just bought a 1980 ATC 110, when I got it it ran fine except sometimes when it was in gear it would stall, no big deal. Since it is so old I decided ill just put a carb rebuild kit in and so it can run even better. I put everything in the carb and now it runs terrible, it always idles high then low then shuts off and before I shift into another gear it sputters between 3/4 and full throttle not to mention bogs down all the time. theres always black deposits on the sparkplug so i knwo its a faulty fuel/air mixture I think I'm pretty sure the main reason is the pilot screw. my manual says to turn it clockwise until it lightly seats then back it out 1 1/8 turns, but when it is like that it runs terrible or won't even run at all. I remember when the old pilot screw was in it was out way further then this one is which I think it was never messed with. So could anybody please help me make my trike run better?! Thanks Alot!! Any suggestions!?

  2. #2
    Join Date
    Mar 2006
    Location
    PA
    --
    3,515
    new points and set them to the right specs might help
    80s......185 atc, Yamaha tri-moto 200, 85 200x with tons of work
    90s......89 Suzuki quad racer 250 (raced 250 A class for 6 years, late 90s.. custom framed 250x with long travel shocks and a built 350x motor.... built Honda 110
    00s...... chomeoly framed 350 RX with all the goodies (thanks to my bro)
    2012.....Replaced the 350x motor for a 444cc YZ426
    WWW.HREATV.COM

  3. #3
    Join Date
    Sep 2006
    Location
    S.E. LA
    --
    700
    Check your fuel flow. Clean air filter? Slowly adjust your pilot screw out about half a turn at a time and see how it runs.

    '85 Honda 250ES Big Red
    '97 Polaris Sportsman 400 4x4 2-stroke
    '04 EZGO TXT

    Former trikes;

    85 & 86 ATC 250es Big Reds, 200e, 185s, 200s, (2) '84 250r, Yamaha 175 2-stroke, ATC 70, (2) ATC 110, TriZinger 60




    ***GOD BLESS AMERICA AND OUR TROOPS***

  4. #4
    Join Date
    Jan 2008
    Location
    Amsterdam NY
    --
    44
    Fuel flow was fine, has a brand new UNI air filter , i tried adjusting the screw and no matter where it is it runs like crap i also adjusted the points and that didn't help either, any other suggestions?

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