50cc runs terrible when hot outside?

[Heckes]

Hello, 50cc scooter (pertutti) runs 30-35 mph avg when the weather is under 90 degrees, but has been topping out at about 10 mph with hotter weather. Does anyone have any suggestions? Thanks.

[katoranger]

Colder dryer air usually makes more power, but that is not the problem here.

Is your scooter an electric choke and vacuum operated petcock?

Allen

[chinariderinthesky]

how many miles on the bike? is it consistent?

[pedez2000]

is your filter stock ? if yes try to change to a free flow air filter .