I have a 2003 yamaha warrior starts right up idles great but when given gas it dies u can hear suckin air before it cuts out so I did the whole hold my hand over the back of carb same thing I adjusted the air/fuel to where it was getin almost no air same thing took the carb off gas tank cleaned everything put it back together same thing then at an idle to took either and sprayed all over to see if any air leaks nothin changed so got on Google and was lookin and other people was talking about the parkin brake so I unhooked it nothin changed i bypassed the 2 wires nothin changed checked the time time is is good even changed the sparkplug nothing changed no matter what I've done it starts and idles fine i can slowly ease in the throttle and it'll rev but if i get half way u can hear it suck in air tryin to die no back fire just dies im at a lose i don't really want to buy a new cdi box but that was my next step any help will be appreciated any questions I'll ask

 

Plugged main jet? Sounds like it is lacking fuel. Is plug wet r dry after running? Compression?

 

Main jet is good i have stock carb and brand new one that came with the quad when I bought it I've cleaned both and had both on and its the same between the 2.. the plug is dry after running and compression is fine ive tried to check everything mechanical before i got into the electrical side of it im a pretty decent mechanic until it come to the electrical side of things but this damn rig has me stumped

 

Any luck yet, dealing with what sounds like this exact issue as well. You going to get a new CDI?

 

Check spark on plug, should be blue to be hot, yellow indicates weak spark. Should also be able to jump a 4mm gap or greater