Throttle sticking

[Toshy]

So any kind of pattern to the wot? Seems like a cable issue is most likely the bike that I have had its throttle stick and sized the motor. Not to keen to start it unil I can find some kind of cause. I Had only heard of 4 stokes sucking the slide open on a flat slide with out a push pull cable. But never on a 2 stroke other than the bark buster catching the throttle.

[Biff]

Originally Posted by Toshy

So any kind of pattern to the wot? Seems like a cable issue is most likely the bike that I have had its throttle stick and sized the motor. Not to keen to start it unil I can find some kind of cause. I Had only heard of 4 stokes sucking the slide open on a flat slide with out a push pull cable. But never on a 2 stroke other than the bark buster catching the throttle.

That's the thing , there was no pattern to the prob at all.
In fact first thought it might even have been cause by arm pump / cramp
But last time it happened it was at the early stages of the ride.

[Zman]

I see that I never posted a follow up on this site for the issue with my friends 200. As it turns out, the bike was jetted very rich in the 1/4 to 1/2 throttle range and the hanger for the two floats were bent uneven. Under heavy bumps the bike would lean out and approach the proper air fuel ratio. The bike would get "Happy" and the difference in engine performance was very disproportionate to the throttle input.

[(F5)]

Still, take the needle out and inspect for scratches. Took me ages to figure out but when the next needle got stuck and scratched Ifigured the jet was causing it. Bloody scary and I've spent a long time broken and ended road racing as a result of stuck throttle (was the actual bar throttle jamming with debris in that case).

[Biff]

Motion pro cable arrived , and have to say, top quality bit of kit
Secured both ends , and vastly superior to standard cable
And also venhill cable that it replaces
Had carb out checked main jet and needle both looked fine.
Slide had slight wear , but no edges
Reeds looked good also
Fingers crossed !
Would definatly add motion pro cable to your upgrade
Biff

[(F5)]

Hope that works well. I bought one and was very happy with it. Until the throttle stuck again. But they are much better.

[Jim Cook]

GMP had this to say on this topic a few years ago. I always listened to what he said. Glenn is a very savy rider.
Check it out and see if it might apply to your situation. (Mainly, he claimed that the carb vent hose was pulling in dirt, mud, or debris, which caused the needle to jam/stick.)

http://www.gasgasrider.org/forum/showthread.php?t=8186