I'm not sure what happend!
I was riding home from school today, went around a corner and my enigine wouldnt reach top speed (id say about 2/3). I thought it might be my fuel running out and switched it to reserve. So for the rest of the ride home it would get fast and then slow over and over. This really confused me so when I got home, I cleaned out the carb, blew some air in the tank (to dislodge any obstructions), and tried again, nothing changed! As I tested, the engine will rev out with no load on the bike, and if their is load on the bike, like just standing on it holding it from moving foward, it will rev a little, pull a little, then backfire.
What do I do?