Spark plugs help you start gasoline engines and glow plugs do the same in diesel engines. But how do they go about providing that boost? And how do they differ?

The holes on the prongs of your electrical plugs may look random, but there's a clear reason they were created and why they ...

Spark plugs are necessary for gas-powered engines. However, they're not all the same, and they can come in different shapes ...

Not all spark plugs are created equal, and knowing which one your car needs can vastly improve your car's fuel economy.