Engine bogs down


New Member
Jun 19, 2008
Has anyoone ever had this problem with there bike.

As you are riding you go full throttle and max speed, and then all the sudden you feel the bike slow down then it picks back up. It keeps doing that, cant figure it out.. I have noticed that there is same slack in the throttle but im not sure that, that would cause the problem. Any ideas??????:confused::confused::confused:

Bikeguy Joe

Godfather of Motorized Bicycles
Jan 8, 2008
up north now
Sounds like your running out of fuel.

This could be caused by a number of things including vibration causing the fuel to foam, a float that is not set correctly, or even running it wide open too long without enough break-in time on the engine.

It could also be a slight air leak or a fuel starvation problem due to inadequate fuel flow.