Its an 03 4x4 and I am missing the air box lid, could that be my problem???

 

yes it most likely is, with the airbox lid missing the carb will draw in more air and it wont run correctly unless you rejet, if you dont have one then id suggest useing duct tape...lol, the engine will run lean without the lid causing it to cut out and such

 

you can try fleabay for atv parts. there are several people who sell them on there.

 

Thanks a bunch guys..A buddy said it probably was the problem..Gonna try and find me one..

 

you can make one out of cardboard and duct tape so you can seal the box on a temporary basis to try this theory out. just a thought.