If there is a component on a Pontiac engine that gets little or no thought, it's the spark plug. We refuse to spend much money or time on them, but unless your Pontiac is powered by a GM diesel, the ...

If you consider your spark plugs little more than disposable engine parts to be replaced for every event or two, you're missing out on a valuable engine-tuning tool. Not only can the correct plug ...

All spark plugs may look the same to the untrained eye. Unfortunately, nothing could be further from the truth. For starters, spark plugs come in many types that are mainly differentiated by the ...