Somewhere along the way, "100,000 miles" became the universal spark plug expiration date. People repeat it so often that they ...

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 ...

When you think of four-cylinder engines, chances are, you're thinking of a system where each cylinder uses a single spark plug to ignite the fuel. This would seem to make sense; why go through the ...

Some upgrades sound faster just because of the name. Performance spark plugs are definitely in that category. The name alone suggests extra power, better combustion, and maybe a little boost in fuel ...

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 ...

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 ...

The first recognizable internal combustion engine was developed by Nikolaus Otto in 1861. Since then, the gasoline-powered engine has evolved immensely. However, the principles that underlie how ...

We may receive a commission on purchases made from links. The glow plugs in a diesel are like the spark plugs in a gasoline engine, but they function differently. The only similarities between glow ...

Mazda 13B rotary engine in a white Mazda RX-7 engine bay. - TTTNIS/Wikimedia Commons When it comes to unconventional engine design, few exceed the Wankel rotary in terms of weirdness. Despite that, ...