Loop bike , carb question/ issue

[arveno]

Hi all , I have a quick question.

Occasionally ( usually when cold)my bike blow " air or gas  or both " from the vent hole next to the choke .( on the side of the carb.)
Bike is an Ambo.

Why does that happen?

[JoeW]

There are 2 holes by the choke housing, the lower one is the bowl vent and the upper one, right under the choke housing, is the air bleed for when the choke is on. These bikes tend to "pop" through the carb when cold, a little vapor occasionally coming from either hole during warm up isn't a big deal.

[arveno]

There are 2 holes by the choke housing, the lower one is the bowl vent and the upper one, right under the choke housing, is the air bleed for when the choke is on. These bikes tend to "pop" through the carb when cold, a little vapor occasionally coming from either hole during warm up isn't a big deal.

aahh !! Ok , understood.( yes the pop you described is exactly what happens )

Thank you .

Marco