when i am in any gear and give it 3/4 throttle and then let off the gas, when the rev goes down it sputters out of the exhaust. it only does this once the motor's warmed up.
thanks

 

Sounds like jetting to me. Is it like a poping? You could be running lean because of the cooler temp

 

Yea it only pops on the way down to idle from a rev. Is there a way to richen the mixture w/ jetting up? It is completely stock...the only time i had the carb off is when my exilary pump spring was sticking. Could it be a sticky valve...if so can i use a gas additive to clean it up?.....thanks