Hello,

This is my first post on this site so I am hoping for some good advice. It all started yesterday when I went for a ride.When I first started it up and warmed it up for a little bit, it would backfire right before it would hit the powerband. This has never happened before. It has very few hours on it so I dought the rings are bad. Things even got worse at the end of my ride. By the end of the ride the backfiring (a loud boom out the exhaust) went away but now there was a new problem. When in nuetral if I would push the throttle 1/4 of the way or less and the motor would redline and would continue to do this even when I let off the throttle. However, the most weird part is that when it would go full throttle by itself when I shut both the key and switch to off the motor would still run at full throttle I finally got it to come back down when i blirped the throttle. This is very weird, it is the first time it has happened to me and I would think when you would shut the ignition off that the motor would quit, but it doesn't! I have heard of many problems with the tors going bad so I was thinking this might be the problem. Any advice is greatly appreciated. Thanks

 

The only way an engine will go to a WOT condition is if you have:

#1 Slides hung up. or
#2 An air leak. (Boot, gasket ect.)
It's up to you to figure out which one.

 

Thanks for the advice. I'm pretty sure it's not a hung up slide, the throttle works good, So where would the air leak probably be? How could I test to see where it is?

 

check ur carbs and boots arent loose same thing happend to me i would start it and would idle for 10 sec and then would rev really hard by its self