While a lot of automotive engines have one spark plug per cylinder, the HEMI V8 might have two per cylinder. What is the science behind that?

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

Spark plugs might sound small and inconsequential, but neglecting to change them can have serious and expensive repercussions ...

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 ...

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 ...

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 ...

In the past decade or so, automakers have turned to downsized turbocharged engines—often with direct injection and higher ...

Fitting a gasoline-powered car engine with frikkin’ laser spark plugs may seem like one sci-fi step too far, but since it improves the combustion and cleans-up the exhaust, it may be the gas engine’s ...

While Hyundai is highly focused on the developing EV market, a radical new spark plug design from the South Korean manufacturer shows that it also wants to extract greater efficiency from the internal ...

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