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 ...

The modern HEMI V8 isn't a hemi engine in the true sense of the word, and it uses two spark plugs per cylinder instead of one ...

The Harley-Davidson Milwaukee-Eight was designed as a successor to the company's V-twin bike engines, and it features unique engineering like four spark plugs.

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

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

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 ...

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 ...

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