Cutaway of Chev engine showing fuel injection components. Air meter, right, picks up vacuum signals in venturi and transmits them to diaphragms in fuel meter on right. With all the noise currently ...

Nestled beneath the air cleaner on your car is a device that mixes gas and air. It's called a carburetor, and its job is a complex one. The job is complex because the necessary mixtures of air and ...

Carburetors with vacuum lines are still found on classic vehicles and small-displacement engines — but what is the vacuum actually used for? Let's take a look.