i just rebuilt my engine new piston and valve.when i started the motor it ran fine but when it went to idle it didnt so i adjust my idle screw then it went really high it doesnt have a steady idle its really high or not at all there is no intake leaks and the carb has been cleaned
has any one had this problem and how did you fix it
1989 kawasaki mojave clamp-on-airfilter web-cam,
k&n jet kit,twist throttle,shredder tires,desert grab bar,d.g.exhaust,.20 piston

 

The idle adjustment on my Bayou 300 is a simple threaded mechanical hold-open thingy for the butterfly--you didn't adjust the pilot screw, by chance?

If you get physical closure of the butterfly with the idle adjustment, I'm at a loss about the fast idle, less'n the slide/needle's stickin', either binding or you have no needle spring/needle spring in wrong (the slide/needle/spring/spring holder must be in right); you said you had no air leaks.

Good luck!

Tree Farmer

 

I had an '87 Mojave that did the same thing. I never could get it fixed because it did it from the day I bought it to the day I sold it. I would check and see if any of your ports are clogged and chech if your float heigth is right. If it is not it could either be your fuel needle or your float bowl.

 

Take you carb off and clean it really well, cleaning and the needles and jets. If that doesn't help, see if the throttle cable is set right and see if the needle is in right.