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 vintage and modified cars.

In racing, spark plugs are practically a disposable commodity. Use them for a while and throw them away. If the engine starts acting funny, replace the plugs just in case. It's cheap insurance and ...

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 ...

Not all spark plugs are created equal, and knowing which one your car needs can vastly improve your car's fuel economy.

Today, spark plugs are pretty easy to forget. In new Corvettes, theyseem to last forever. That wasn't the case years ago and, frankly, sparkplugs are often critical when it comes to performance and ...