I've been working on this quad for the last two weeks reviving after a sitting a year because of a bad rear gear drive (that's been fixed). The problem is it's not running well. It's sputting as i give it gas. I've cleaned the carb and blew it out and the spark plug. It idles well. I thought about running carb cleaner through the gas tank but not sure it would help. Could it be something other the fuel system?

thanks for your input........and HAPPY NEW YEAR!!!