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 ...

Spark plugs are an essential part of your engine’s operation. When your engine fires, it’s the spark that causes the ignition cycle to begin. Over time, spark plugs wear out and should be replaced. If ...

For hot rodders, spark plugs are often nothing more than inspection tools that reveal whether an engine is running too rich, too lean, or just right. Street guys look for a nice tannish-brown tint on ...

Spark plugs are integral components for gas-powered internal combustion engines. These diminutive devices create the electric spark that ignites the fuel and air mixture inside your motor. When ...