Spark plugs for gas-powered lawn mowers aren't universal. They vary in size, gap, and heat range. The type you need depends ...

Spark plugs are an integral part of your engine, but they need to be replaced every so often. We'll tell you how to find out and what socket size you'll need.

The lowly spark plug is responsible for triggering this explosion when an electrical current flows between its center electrode and ground electrode, creating a tiny spark. Though small, inexpensive ...