The Spark Plug of Toyota Avalon vehicles has the main function of causing sparking that initiates the burning of fuel/air mixture in the engine. This component is a cylindrical metallic structure with a central electrode, metal terminal, considered ceramic insulation and all enclosed in metallic casing. Various types of spark plugs that include copper core, platinum, iridium, and double platinum has been used in the Avalon models depending on the ignition system and performance requirements. The Spark Plug's threads, seats, heat range, and reach are selected to result in better combustion and minimize cylinder head damage. Toyota Avalon cars require proper functioning of Spark Plugs; this depends on the maintenance and replacement of these plugs.
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