Banshee_370
09-07-2008, 08:11 PM
ok guys, my 400ex ran ok but i spoke to colby at c&d racing and he suggested to lean out the main a little (iwas running a 155 dynojet) and richen the pilot (i was a stock 38).
installed everything, needle on 3rd clip from top (dynojet needle) and i cant seem to get it to run good at anything below 1/3 throttle. wot seems good but when i stay at constant throttle in the lower rpms it likes to bog and pop and almost die.
i have tried all air screws combos from 1 and 1/2 all the way to 3 and 1/2 out and still cant get it. i noticed it after about 45 minutes of riding when we got to a certain part of the trail we decided to just coast on instead of riding hard. when i got back home i also noticed that one of the screws to hold the float bowl is missing...perhaps there is an air leak? i sprayed it with carb cleaner while the bike was idling and head no rpm gain so i dont think it is the problem.
can anyone please help? my mods are a white bros slip on, k&n filter with outer wear, lid on and choke plate removed.
thanks
installed everything, needle on 3rd clip from top (dynojet needle) and i cant seem to get it to run good at anything below 1/3 throttle. wot seems good but when i stay at constant throttle in the lower rpms it likes to bog and pop and almost die.
i have tried all air screws combos from 1 and 1/2 all the way to 3 and 1/2 out and still cant get it. i noticed it after about 45 minutes of riding when we got to a certain part of the trail we decided to just coast on instead of riding hard. when i got back home i also noticed that one of the screws to hold the float bowl is missing...perhaps there is an air leak? i sprayed it with carb cleaner while the bike was idling and head no rpm gain so i dont think it is the problem.
can anyone please help? my mods are a white bros slip on, k&n filter with outer wear, lid on and choke plate removed.
thanks