The Chevrolet Spark is one of the most misleadingly named cars in recent memory. The Spark EV at least had stump-pulling torque, but the spark of life in the gasoline-powered models was dim indeed.

Any certified gearhead knows that diesel engines do not use spark plugs. But why not? If power in an engine is created by combustion or explosion of flammable liquids, won't a spark plug in a diesel ...

Oh, your Gen-III Hemi has two spark plugs per cylinder? Cool, cool, but let's up the ante, shall we? Oh, yes, three spark plugs per cylinder, now we're talking! Three-plug engines are to two-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 ...

Back in the days of carburetors and cigarette lighters being common in dashboards, a Gen-II Hemi didn't need a lot of spark plugs to prove a point. Eight cylinders, eight spark plugs — simple, loud, ...

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 ...

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 it comes to unconventional engine design, few exceed the Wankel rotary in terms of weirdness. Despite that, the same basic principles of internal combustion apply here: Fuel and air are mixed and ...