Rider912

Just got a 01 banshee, it runs great in mild weather but as soon as it gets cold, the engine will fire but wont stay running usually. I sometimes will be able to get it to idle for a couple seconds but then I give it gas it just dies out. And if it does get going, there will be a very distinguishable power shortage, as though its never warmed up. I have K&N air filters on it that need a good cleaning, not sure about the carbs, and I just cleaned the spark plugs yesterday and it finally got going once. What should I do?