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Next to contact breaker, spark plug is among the most weakest part of the ignition system. It is mounted within the combustion chamber from the engine, where working conditions are- severe. During peak combustion conditions the temperature inside the combustion chamber in the modern car engine may be around 2500 ºC and the pressure about 7 Mpa. Moreover a spark plug can also be exposed to thermal and load cycling fatigue on account of sudden changes in temperature and pressure-from the high temperature of burnt gas on the relatively low temperature with the air/fuel mixture and from the ruthless during the time of explosion from the air/fuel mixture to low pressure during induction. In addition, the spark plug needs to endure high voltage, mechanical vibration along with the corrosive atmosphere of combustion gages. A modern spark plug posseses an economical life of about 10,000-16,000 km. The manual wheelchair has been doing use for decades and contains gone through many changes. The constant feature has become that this chair is self propelled by pushing around the hand edges that surround the wheels. The owner actually pushes the wheels around and around to have derived from one of location to the other. In addition to that, the footrests with a manual wheelchair can be removed as well as the user can walk the chair forward along with his feet.