The spark plug is the middle man between your ignition system and power stroke of your standard gasoline engine. It consists of a center electrode and ground electrode placed just above the center electrode, and both attaching to the body of the spark plug. In between the two electrodes is what is called an air gap, which is where a high voltage spark (40,000 to 100,000 volts) travels to ignite the air/fuel mixture.
Once the mixture ignites, an explosion is created that drives the pistons down, turning the crankshaft, which subsequently turns the driveline and powers your vehicle either forward or backward. With so much at stake for every revolution of the engine, it is easy to see why the spark plug has been the brunt of a lot of improved formulations, one being the composition of the plug. Continue reading Autozilla’s Ultimate Guide to Spark Plugs