Had family over this weekend, and really worked my 02 Quest 650 hard giving rides. I also think that they may have gone for a long ride in low drive. They parked it only when they thought it ran out of gas. But I filled it up and took it for a spin and it could barley get me up a small hill. I tried both high and low gears and they react the same.

Any trouble-shooting ideas? I am going to powerwash it tomorrow in-case it is something as simple as stuck mud stuck somewhere.