Start by disconnecting the plug wire from your engine’s spark plug. Then use a wrench to unthread the spark plug from the cylinder head, removing it from the engine. Examine both ends of the ...

Your engine’s spark plugs are one of its smallest and most important, parts. We look at some of the best. The engine in your car, truck, or crossover operates on the simple principle of ...

and the spark plug wires that join these components. Advancements have greatly reduced the need for ignition system service. Where distributor caps and rotors once needed replacement, electronic ...