Well, I'm pretty pissed off right now. WE have snow and my sled doesn't even want to work. I was running it before but it did not run well at all. It did not have top end speed and it backfired a couple of times. My dad suggested it was out of tune so we start messing with the pilot screw and idle screw. I set the pilot screw to 1.5 turns (standard) and started messing with the idle. It smoked like crazy for a while before I realised the choke was still on which consumed a lot of gas. I took the choke off and now she does not want to start at all, at every idle settting. I'm really pissed off now and I've wasted half my tank of gas trying to fix the stupid thing. Help would be appreciated.