kx80 help

jjjcost · #1 (**permalink**) 05-11-2008

i have a kx80 that will run ok for a minute or so, you cant go below midrange or the bike dies out, it doesnt run without the choke which i know means its running lean but the carb is clean and i havent modded it at all since what would cause a sudden change like this it ran great before it sat but when we got it running again it runs like crap now ive cleaned the carb multible times so thats not the problem. it back fires without choke, so any ideas guys. im pretty sure its carb related ha.

jjjcost · #2 (**permalink**) 05-12-2008

well i got the bike running alright but i still have to run with the choke and when i get into high rpm's before the powerband hits in it sputters out, because of the choke that leads me to lean but because it sputters out before the powerband which usually tends to be a rich condition, could someone help me out here please.

FPMXer · #3 (**permalink**) 05-13-2008

Check the reeds and what about the air filter condition?

jjjcost · #4 (**permalink**) 05-15-2008

reeds are good and air filter not present, im fairly sure its the carb jetting. i went from a 200 to a 220 and it still runs really lean lots of sputtering up top and still have to have the choke i think it runs alittle better but im going to look into it more tomorrow.