Hyundai Elantra: Spark Plug. Description and Operation - Ignition System - Engine Electrical System - Hyundai Elantra MD 2010-2015 Service manualHyundai Elantra: Spark Plug. Description and Operation

Description

A spark plug is a device for delivering electric current from an ignition system to the combustion chamber of a spark-ignition engine to ignite the compressed fuel/air mixture therein by means of an electric spark, while containing combustion pressure within the engine. A spark plug has a metal threaded shell, electrically isolated from a central electrode by a porcelain insulator.