ok i got the not runing part fixed i need to know why now it runs good but when runing it gets to a certain point and starts to get real jerky rpm will pick up and drop pick back up and drop how can i fix this or adjust it so that it runs better [img]i/expressions/beer.gif[/img] this is a 86' yfm200dxs with a mikuni carb

 

did u clean the carbs?

 

yea i cleaned it very well with carb cleaner and blow out the jets to insure there was no dirt or junk in the carb before it wouldnt even run when i hit the gas im wondering if i have the settings way out im needing to get it running right for this weekend

 

its probably a jetting issue, put a new plug in it and ride it around normally for a little while, then pull the plug. if its black and nasty looking, its rich. if its white and dry looking (hot) then your lean. hope this helps.

 

its probably a jetting issue, put a new plug in it and ride it around the way that causes these symptoms. then pull the plug. if its black and nasty looking, its rich. if its white and dry looking (hot) then your lean. hope this helps.