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Thread: lt80 sputters and dies

  1. #1
    Join Date
    May 2007
    Location
    santa barbara, CA
    Posts
    19
    hey i am very new to the lt80, i just picked one up yesterday. so heres my problem: when i am riding it in a straight line or have all 4 tires well planted on the ground it runs fine but as soon as i go up on the 2 side wheels it sputters and dies. this doesnt happen when i am doing a wheelie, only when i'm on the side wheels. also if i take a corner hard it will sputter a little bit. the other weird thing is my choke. when the choke is pulled up (i think this means on) it runs but when the choke is pushed down (i think this should be off) it will idle for a few seconds then die. again i am very new to the lt80 and have never had a two stroke before. sorry if the questions are really stupid but i need the help . any ideas would be greatly appreciated. thanks again!
    1987 250x bored and stroked to 370cc, webber cam, rockers and springs, poarted and polished, k&n filter, super traps exhaust, motorsports nerf bars, renthal bars and more

    2001 lt80 stock for now

  2. #2
    Join Date
    Mar 2004
    Location
    East Springfield Pa.
    Posts
    2,370
    I think you should clean the carb.
    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
    May 2007
    Location
    santa barbara, CA
    Posts
    19

    it only idles with choke on

    i cleaned my carb today and it runs much better. it now runs and drives with the choke off but has trouble idling. i have to keep tapping the throttle or it will die after a few seconds. i tired turning up my idle speed but that didnt seem to help. it idles alot better when the choke is on. is it running to lean with the choke off? if so how can i make it run more rich? again sorry for my ignorance. thanks alot
    1987 250x bored and stroked to 370cc, webber cam, rockers and springs, poarted and polished, k&n filter, super traps exhaust, motorsports nerf bars, renthal bars and more

    2001 lt80 stock for now

  4. #4
    Join Date
    Mar 2004
    Location
    East Springfield Pa.
    Posts
    2,370
    Did you remove both jets and clean?
    If the choke on makes a difference then it's in the carb, reed, or possibly a low compression problem. A compression check will eliminate that aspect (120+).
    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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