Why does a motorcycle stall when throttling while cold but runs normally when warm?

[QuinnRose]

This issue is caused by the carburetor supplying a lean air-fuel mixture (insufficient fuel) when the motorcycle is cold, making it prone to stalling, but functioning normally once warmed up. Function of the carburetor: The carburetor's role is to atomize gasoline using the kinetic energy of the incoming airflow. A complete carburetor setup includes a starting device, idle device, medium load device, full load device, and acceleration device. It automatically adjusts the mixture concentration and output volume according to the engine's varying operational demands. Carburetor overview: The carburetor automatically proportions the appropriate mixture concentration and quantity based on the engine's operational needs. To ensure uniform mixing of the air-fuel mixture, it also features fuel atomization capabilities to maintain proper engine operation.