You'll know when a spark plug breaks. The question is, do you know how to safely replace a broken spark plug and which tools ...

Hemi engines have had 16 spark plugs since the early 2000s -- which equals two spark plugs per cylinder. This article ...

Gas-powered internal combustion engines need spark plugs to (literally) ignite and complete the combustion stroke, enabling the motor to produce power. They may seem unusual to the untrained eye, but ...

In olden times, part of the ritual of changing your engine's spark plugs was making sure that the gap was set correctly for optimum performance. That is, the distance between the spark plug's center ...