Originally Posted by clashed13
My motorized bicycle seems to like almost stop running mid ride. It like slows down and stops producing power and speed if I go over like 10mph which it barely does. It will (by itslef) just stop producing power and go back down to like 7mph then go back up to ten mph then it keeps doing this my whole ride. Whats the deal?
Try loosening or removing the gas cap to see if it solves the problem.
Your gas cap vent hole may be blocked causing vacuum lock.