Fitting bigger spark plugs might sound like a recipe for improving power output, but it can have catastrophic consequences for your engine.

It’s the kind of moment that makes anyone squint at their receipt like it’s written in a secret code. You pay for new spark plugs, drive away hoping for that smooth, happy idle, and the engine still ...

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 ...

Your engine's spark plugs are absolutely vital to the longevity and clean running of your engine. That's why they need to be changed regularly, and properly. Here's how to do that without making a ...

Perfectly tuning the heat range of an engine's spark plugs is something of a dark art to all but the most well versed tuners and the engineering egg heads at automotive OEMs. Getting the spark plug ...

In the early '70s, Mopar changed the concept of a tune-up with the introduction of the breakerless, capacitor-discharged ignition system. Thus began the evolution of electronic engine controls. since ...

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

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 ...