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Thread: Lt80 Help

  1. #1
    Join Date
    Nov 2005
    Location
    uk
    Posts
    50

    Lt80 Help

    Hello again,

    I had idle problems with my lt80 about a month ago, stripped carb and cleaned pilot jet again and idled perfect, i then sold the bike to a local guy who is picking it up in April, i have been doing a bit of work on the bike in the garage and it has sat for a fortnight with a carb full of fuel, i took it out today and ran it for ten minutes parked it up and let it idle, it then started to die and i just presumed it needed adjustment with it getting upto temp, tried adjusting and nothing, still dies with idle screw nearly all the way in and is now a pig to start (needs choke), do you think the pilot could have clogged again, what is the procedure for setting the idle correctly?, thanks in advance and happy new year.

    Steve

  2. #2
    Join Date
    Mar 2004
    Location
    East Springfield Pa.
    Posts
    2,370
    Clean the carb again.Deff a chunk of something plugging a jet IMO.
    Once running properly, adjust the idle.
    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
    Nov 2005
    Location
    uk
    Posts
    50
    Thankyou LT80,

    These carbs are a pain, i had the thing absolutely immaculate and it has hardly moved since then, can i clean it properly without carb cleaner as i can't get any near me, do the pilots deteriorate with time?, how should i clean it?.

    Thanks

  4. #4
    Join Date
    Mar 2004
    Location
    East Springfield Pa.
    Posts
    2,370
    Just take the jets out and blow thru them. Should do it no problemo. Wash it out w/a lil gas if you feel the need.
    A uni-filter #101 on the carb VENT line is the cure.
    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

  5. #5
    Join Date
    Nov 2005
    Location
    uk
    Posts
    50
    is plugged jets due to dirt a common problem with lt's?

  6. #6
    Join Date
    Mar 2004
    Location
    East Springfield Pa.
    Posts
    2,370
    Yes. Most don't know that it comes from the vent line.
    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

  7. #7
    Join Date
    Nov 2005
    Location
    uk
    Posts
    50
    LT80 thanks again for your reply you are a wealth of LT knowledge, i just can't understand how this could have happened again, when i rebuilt the lt the gas tank was cleaned the reeds were cleaned all the lines were cleaned and the carb was immaculate, since i got it running the bike has only idled in the garage and ran up the road for a total of ten minutes, it has never been in the field or in any dusty conditions, so i can't understand how the jets have plugged, when we got the bike new in 1994 we used it for 4 years and never removed the carb or cleaned anything fuel related and it never missed a beat and now it's all clean it acts up, when i installed the piston i ran some oil in with the fuel aswell as the oil pump, could this be causing any problems, as i don't want to deliver it with any problems, i want it perfect.

    Thanks

  8. #8
    Join Date
    Mar 2004
    Location
    East Springfield Pa.
    Posts
    2,370
    You didn't do anything wrong.
    Just one of those "S**t happens" things.
    Happy to help.
    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

  9. #9
    Join Date
    Nov 2005
    Location
    uk
    Posts
    50
    Cheers LT80,

    i have ordered a new pilot and main jet, for the price they are it seems worth it to prevent any more problems, one last question, do i need to install the little black rubber that goes in the carb bowl and covers the botton of the jets, i'm sure i read somewhere you can leave it out (stock motor)?.

    Thanks again

  10. #10
    Join Date
    Mar 2004
    Location
    East Springfield Pa.
    Posts
    2,370
    You can leave that out.
    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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