Question id 297 - Preflight Preparation - FAA PPL(A) - Private Pilot Airplane

Fuel is pumped from the float chamber to the fuel discharge nozzle by an engine-drive fuel pump where it mixes with intake air.
Low pressure in the venturi of the carburetor forces fuel to flow through the main fuel jet and mix with intake air.
Fuel is discharged into the airstream at a pressure well above atmospheric pressure causing it to vaporize.

Training tests and timed exam simulations FAA PPL(A) - Private Pilot Airplane