They may look the same, but a closer inspection will reveal that spark plugs come in a variety of shapes and sizes. What works for the V8 in your Ford F-150 may lead to misfiring and idling problems ...

Niterra has been granted a patent for a spark plug design with a unique center electrode structure. The spark plug features a specific configuration that enhances performance and efficiency. The ...

That’s an odd one, to be sure. I’ve never heard of an engine that used different sized spark plugs in different cylinders, so you’d have to assume it’s the result of somebody only doing half a job ...