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

It doesn't matter what type of vehicle you drive or which type of spark plug you're using. If your car has an internal combustion gasoline engine, it has the potential to eject a spark plug — although ...

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 ...

This is an extreme Champion racing spark plug once used in 15:1 NASCAR superspeedway motors with a radically cut-back side electrode. Spark plug manufacturers usually spot-weld side electrodes to the ...