MY LT250R is running really poor in the high rpm range. It seems like its like misfiring or something it just not running smooth please help I need to get this thig running asap...... lots of replies here people the bike is an 86LT250R

 

Needle and jet clean in your carb?

 

Make sure you check your reeds. like qracer suggest the jetting could be off.

 

could be just about anything,if i turn my air screw one more turn out than it is suposed to be mine wont really rev past halfway. first of all,i would dissasemble the carb completely and clean it out ,and make sure your jetting is in the ballpark,and the air screw.best idea would be buy the manual and use the troubleshooting if your not to sure of yourself . Its hard to tell you what it could be because it culd literaly be 20 diferent things----an engine needs 4 things,fuel--air---spark---compresion--a serious lack or surplus of either of these and it wont run right

 

Did it run fine one day, then the next it ran like this.......

OR did you just do some new Mods, and this started?