Two hands working on the engine of a car. - Autolite Iridium Ultra Store We may receive a commission on purchases made from links. A spark plug isn't just one standard item, and the market is full of ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Perfectly tuning the heat range of an engine's spark plugs is something of a dark art to all but the most well versed tuners and ...

Every car with an engine has spark plugs, but what exactly do they do, and how long do they last? Well, that largely depends ...

In the past, recycling spark plugs was too expensive. However, now, it's possible to extract and reuse the plugs' precious ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. When an air-fuel charge burns inside an engine's cylinder, some of the heat that is produced gets absorbed by the spark plug. The ...

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 ...