If you want to get performance spark plugs in hopes it will increase your car's horsepower, pump your brakes for a second. It's not that simple.

Changing spark plugs is standard maintenance on gasoline-powered cars. Can you clean and reuse old spark plugs, or should you go for brand new ones?

In olden times, part of the ritual of changing your engine's spark plugs was making sure that the gap was set correctly for optimum performance. That is, the distance between the spark plug's center ...

Any certified gearhead knows that diesel engines do not use spark plugs. But why not? If power in an engine is created by combustion or explosion of flammable liquids, won't a spark plug in a diesel ...