Without a spark plug, your gas-powered lawn mower won't work. When it's time to replace, does it matter what type you buy?

Spark plugs are one of those maintenance items that, along with things like brake fluid and thermostats, are easily overlooked but extremely important to your car's safety, longevity, and performance.

If you want to get performance spark plugs in hopes it will increase your car's horsepower, pump your brakes for a second. It ...

Don’t worry, it’s not just you. Everyone dropped their first, or likely fortieth, F-bomb when their dad had them hold the spark plug while he hit the kickstarter on their dirt bike. While it might ...

Spark plugs that haven't been changed for a long time can become one with the cylinder head. Fortunately, it's possible to repair damaged threads instead of scrapping the head. (Photograph by Chris ...

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 ...

If there is a component on a Pontiac engine that gets little or no thought, it's the spark plug. We refuse to spend much money or time on them, but unless your Pontiac is powered by a GM diesel, the ...

I've heard platinum spark plugs can get stuck in engines. Is this true? If so, is it possible to prevent? There has been a long-standing rumor, longer than the promised 100,000-mile lifetime of ...