my bike ran fine before I did this...So i pulled out a plug to check my air fuel ratio, it was black, so I put it back in. normal stuff right? When I went to drive the bike it felt like it was running on 3 cylinders... So I took the plug back out, checked the spark on the exhaust, it was looking rather weak, So I parked it and started checking around here to see what it might be . When I went to start the bike this morning, it was dead. So I charged the battery and now it starts. But my bike still runs like #$%*, it feels like it has no power, the spark looks a little better, but it just feels like its wimpy now and it kinda sputters and makes weird noises on acceleration. just seems rather lacking. any Ideas? all i did was check the plug, it ran fine before I did that. Could a forign object have fallen in the chamber? would this explain my problem? and what could i do about that? thats my only guess as to what could have happened