Spark plugs are a key component of your gasoline engine, and they have a key role in the ignition process. How long can you ...

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 ...

If you've inspected your vehicle's engine block closely, you've likely noticed a few strategically placed metallic discs that look somewhat out of place. The discs are typically cup-shaped plugs, ...

The spark plug in your car and a spark plug on a boat have the same job, but perform it in very different environments.

Your engine’s spark plugs are one of its smallest and most important, parts. We look at some of the best. The engine in your car, truck, or crossover operates on the simple principle of capturing the ...

Can you really use a pencil to replace the inside of a spark plug? One intrepid group of experimenters decided to find out ...

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 ...

My daily-driver 2005 Volvo V70 R has been dependable, despite its 185,000-mile odometer reading and age. It’s never broken down or left me stranded, and outside of oil changes I’ve replaced only ...