My moped is not going as fast as it used to?

Always give year, make, engine size and model # when asking questions. We need all of that info to give an informed answer.

Knowing the mileage is helpful when diagnosing running problems.

Check the air cleaner - clean or replace if necessary.

Check the cylinder compression.

2 stroke engines ware out fast and require rebuilds every other year.

a thank you to make something bypass swifter - - circulate to the right of a mountain, works super one way! - Mount 10 of those a hundred-lb Supermagnets to the front, you will desire to be waiting to hook onto any tractor trailer comfortably. bypass as speedy at they like. - a pair of mothballs with Naptha in them would desire to do the trick...you would be wanting a motor rebuild after the 1st experience, nevertheless...assuming you could carry on! < warning! this is a humorous tale, and should no longer be tried, because it is going to deplete the motor! (so i've got heard )>

What moped is it? How old is it? Way to broad a question...

throw it away!! buy a scooter made in japan