We may receive a commission on purchases made from links. A spark plug isn't just one standard item, and the market is full of different types, materials, and designs. They're each made to run best ...

So you've pulled the spark plugs from your car, motorcycle, or nitromethane-powered phone charger, and they seem dark. Sure, spark plugs, which ignite the fuel-air mixture in engines and make them go, ...

The spark plugs in your car's engine are serviceable parts that require periodic replacement. Those plugs are rather durable and would last the life of multiple oil changes, but they do eventually ...

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 ...