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Some people tend to be more fortunate than these. People with innately high metabolisms can munch on chips and candy while some deprive themselves of any indulgences as a way to lose weight. They exercise, make appropriate food choices, and now have problems trying to shed weight. It can be frustrating, tedious process. For some, it?s a miserable one. To lose weight, they are often hungry, chugging bottles of water so that you can fill the empty void within their stomachs. 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.