A carburetor is a mechanical device that mixes air and gasoline in the right proportions before sending that mixture into an engine to be burned. Think of it like a chef carefully measuring ingredients: too much gasoline makes the mixture too rich and wastes fuel, while too much air makes it too lean and the engine won't run properly.

For most of the 1900s, carburetors were essential parts of cars, motorcycles, lawnmowers, and other gasoline engines. Inside a carburetor, air rushes through a narrow passage, creating suction that pulls in just the right amount of fuel. As the driver presses the gas pedal, the carburetor adjusts the mixture to give the engine more or less power.

Modern cars no longer use carburetors. They've been replaced by fuel injection systems controlled by computers, which mix air and fuel more precisely and efficiently. But carburetors still power many older vehicles, small engines, and classic cars. Mechanics who understand carburetors know how to adjust tiny screws and settings to make an engine run smoothly, turning what seems like magic into a science of precise measurement and airflow.