One of the best ways to gain automotive knowledge is simply by asking the two-word question: “What is (a part, theory, thing)?” and locking in the definition after it is given. We’ll take a flier and ...

Spark plug gapping may sound like one of those old-timey chores, like setting breaker points in a distributor or lubricating the frame, but having the proper spark plugs and ensuring they're properly ...

Read a good spark plug lately? We hope so, for your engine's sake. But spark plug reading—the traditional way to check your fuel mixture and monitor other vital conditions in the combustion chamber ...

Spark plugs play a key role in keeping your engine running, since it's that little jolt of electricity that ignites the fuel/air mixture in a motor's cylinders. And that little spark has to be ...

We may receive a commission on purchases made from links. A spark plug isn't just one standard item, and the market is full of different types, materials, and designs. They're each made to run best ...