Raptor 350rw 2011 problems

[Strijc]

Hello from Slovenia!

Im new here and i will be short with my first post.

I will make another video tomorrow but maybe can someone help me with this...
Yamaha starts just fine. If i accelerate to mid rpm it just start backfireing... Just watch video...

http://youtu.be/Vm_lgq786QY

Thank you!

 

[mvvette97]

Do you have the air box on it? I can't see in the video. If not then that is your problem. Your raptor will have a cvk type carb and needs to have some air restriction for the vac slide to work. It sounds very lean

 

[Strijc]

Hi,

I put air filter back on..... And here is better video.... Carb problems?

http://youtu.be/xnGj5n68zQw

Starts really fine, but then.... Have no idea and i need some help....

 

[mvvette97]

sounds like lean pops through the intake. Do you have the lid for the air box? Put it back on and see if it fixes it. If so then the carb needs to be jetted. Another thing has anybody had the top of the carb off where the slide diaphragm is? It may not be seated in the groove.