The Spark Plug operates in Toyota Sequoia automobiles as a controlled source of the electric spark that ignites the fuel/air mixture within the cylinders. It works by supplying an electric current from the ignition system into the combustion chamber so as to produce a spark to enable running of the engine. The spark plug contains a metal shell, central electrode and ceramic insulator hence has to operate with high voltage ranging from 12000V - 45000V. In the course of time different kinds of spark plugs are used in Sequoia models, for instance with multiple ground electrodes, and spark surface-discharge spark plugs which help to optimize ignition efficiency and the service life of the spark plug. Routine inspections are also critical in checking if the engine has features of wearing out such as presence of carbon or signs of overheating.
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