In an era dominated by electric drivetrains and over-the-air software updates, one Florida teenager has built a fast-growing company around a piece of hardware many drivers barely remember: the ...

In Part One of this series (January '93), we discussed how an internal-combustion engine heats a fuel-and-air mixture to convert it into mechanical energy. In February, we reviewed how a four ...

On older vehicles and smaller engines, the carburetor controls the mixture of fuel and air that reaches the engine. Here's ...