Carburetor Icing

What Causes Carburetor Icing in Aviation? Carburetor icing is a problem in small aircraft with piston engines that use a carburetor to mix air and fuel for the engine. Ice can build up inside, choking the engine and causing power loss. Here’s why it happens, explained simply: 1. Temperature Drop in the Carburetor The carburetor has a narrow section called the venturi, like a pinched part of a straw. When air flows through it, two things cool the air down, making it cold enough for ice to form if moisture is present: ...

August 28, 2025