So you've pulled the spark plugs from your car, motorcycle, or nitromethane-powered phone charger, and they seem dark. Sure, spark plugs, which ignite the fuel-air mixture in engines and make them go, ...

Spark plug testers will only help you figure out issues related to spark plugs. Does that make them useless, or is there a ...

A spark plug thread chaser isn't always the answer, but it can make a big difference when you're installing fresh new plugs.

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 ...

One of the main differences in regular maintenance between a gasoline and a diesel-powered car is replacing the spark plugs. While diesel engines rely on compression to create ignition, and thus ...

Spark plugs are an essential part of a car's ignition system. As the name suggests, they provide a spark of electricity that ignites the fuel and air mixture, and gets the engine up and running.