Ok I had my bike down for the past few weeks repairing some minor stuff. I changes the oil and when I started it up i noticed that It had white smoke pouring out of the exhaust. Now this might have been my fault as I did put some gas in my bike that was laying aroung in a small container and then relized it might have been mixed gas from a weed eater.LOL ok so I pulled the plug out tonight and noticed that it was a bit dark like a oil or carbon... almost like a 2 stroke that was running rich. So where so i go now? replace the plug and fresh gas? any comments?..Im still so new to 4 strokes but im learning fast.