We may receive a commission on purchases made from links. When it comes to engine care 101, a spark plug replacement — also referred to as a tune-up — is an essential task. Spark plugs, as the name ...

As you likely know, internal combustion engines that run on gasoline rely on spark plugs to initiate the ignition process. A high-voltage current is sent through the spark plugs, allowing them to ...

Spark plugs sit at the center of every gasoline engine’s heartbeat, turning fuel and air into the controlled explosions that move your car. When they work properly, you feel smooth power, quick starts ...

Most spark plugs come from the factory with a pre-set plug gap that is recommended for the application. Experimenting with wider or tighter gaps is one way to dial in your engine’s performance, but ...