dun dun dun dun dun dun dun ...... what is it?

[Freak]

My motor does this every once in a while. dun dun dun dun dun dun dun I hit the throttle and it wont change, then I have to flip the key switch and it goes away. My sled is lean in the low end and it will do it a lot when I am putting around but it will also do it when I chop the throttle hard sometimes. It seems like it is some sort of electrical or computer issue or maybe a lean vapor lock of some sort. Anyone else had this happen?

 

[Yammerhead]

TORS kickin in? Adjust the free play on the throttle cable to fix. Many posts about it if you do a search on TORS.

 

[Freak]

Thanks Yammer, It says pro on my profile but I guess Im still a noob.

 

[turborx1ton]

mine was doing that also then it would take off. i had put my needles on # 2 when i built it. it was worse at lower alt. put up to #3 and now its gone. it was a pain when you were pulled up to someone to race and it hessitated for a couple of seconds then took off. (at 10 or 19lbs). where are your needles also i put my scews at 2.5 while i was jetting it up to 135's.

 

[Thrusted Vector]

TORS is kicking in,when you turn the engine off it resets itself.Just add some free play.

 

[Freak]

Cant get this problem to go away. ITS FREAKIN EMBARRASSING AND DANGEROUS!!! YAMAHA! HU HUH UH U HU HUH OK CALM DOWN.........

 

[turborx1ton]

fuel press to low or leaking t's what was used to seal them. the yamabond worked perfect and will stay more plyable. is it worse at higher boost settings

 

[Smoky1111]

Check your coils. They get so bad they will cut in to the top of the spark plugs after a while, but they also go bad and cause a intermittent miss at low speed. As they get worse they will cause a miss through out the entire rpm range. I have heard this is mostly a problem with some 03's. Good luck with what ever it is.

 

[Freak]

I think this is the carb side switch on the tors sensor. I will trouble shoot that.