ok 99 scrambler 500 4x4.....
i pulled carb off and cleaned it and ever since it has been backfiring.....
what could be wrong did i loose or mis adjust the float.


when it back fires====i rev up and then let off and it backfires
what could it be????

 

backfiring is from a lean condition, an intake leak or exhaust leak.
I'd double check around the intake and carb boot.

 

alright will do later tonight when get home from work... it dont do it till its warmed up thats what i dont get

 

exhaust leak will do it to then???? i did take exhaust off also maybe that could be it

 

So exhaust leak will cause it to missfire then or what????
what are some other possibilitys it could be

 

alright i rode the atv alot more last night and when you get on it for a longer period of time it will start to loose power and start stalling a little bit and the top end is nothing... you guys got any idea what i messed up on this machine???? kinda sux i put all the plastics on yesterday and they gotta come off know...... the intake boot is tight so it is something in the carb cuz i had it off..... i also aint sure if i got that main jet on the bottom of the carb clean cuz i didnt no it was down ther.... please get back to me with ideas of what it is

 

<div class="FTQUOTE"><begin quote>Originally posted by: allenduren

when you get on it for a longer period of time it will start to loose power and start stalling a little bit and the top end is nothing...</end quote></div>

When I saw this condition on a carbed machine, it turned out that the float was set improperly. It was not letting enough fuel into the bowl, which starved the engine for fuel at higher throttle settings and yielded exactly the situation you describe. Perhaps you misadjusted the float while the carb was off?

 

Thats what i kinda was thinking also.... now im gonna have to pull the whole damn thing down again grrrrrrrrrrr lol there a pain in da *** owell hahah this would mako backfire also wouldnt it