What does carburetor ice do to engine performance?

Carburetor ice negatively impacts engine performance by reducing fuel and air flow. When ice forms in the carburetor, it obstructs the intake passage where the fuel and air mix. This restriction decreases the amount of the fuel-air mixture that can enter the engine, leading to a loss of power and potentially reducing the engine's operational efficiency. As a result, pilots may experience rough engine performance or a drop in power during flight when carburetor ice is present, making it crucial to be mindful of temperature and humidity conditions that promote its formation. Understanding this mechanism is essential for effective aircraft operation and safety.