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 ...

Ignition issues can be a real pain to diagnose and could leave you stranded on the side of the road, but identifying the ...

For most cars and trucks, gasoline and diesel engines follow the same four basic steps to make power: intake, to get a mixture of fuel and air into the cylinders; compression, to squeeze that mixture ...

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, ...