This spark plug tester features an innovative dual-socket design, allowing you to test two spark plugs simultaneously. By taking this approach, you can effectively compare the spark intensity of two ...

Simply put, getting the maximum power from any race engine is a function of the temperature, pressure and timing of combustion gases in the cylinder. Since it would be expensive and impractical for ...

The requirement to gap spark plugs might not be as common as it once was, but it's still an important bit of maintenance on ...

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 necessary for gas-powered engines. However, they're not all the same, and they can come in different shapes ...

Spark plugs are vital for gas-powered cars. However, they can be subject to a strange phenomenon known as blow out. Here's what that means and how to fix it.