Taurus V6-183 3.0L VIN U FI (1993)
Spark Plug: Description and Operation
Spark plugs provide the path for high secondary ignition system voltage to flow to ground. It is this current, arcing between plug center and ground
electrodes, that creates the air/fuel mixture ignition spark. Many spark plugs are made with an internal resistor, designed to reduce ignition system
electrical interference with entertainment systems and computerized devices.