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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. William went on a marvelous journey six hundred years back over time along with his nanny, Mrs. Phillips, inside first book, The Castle in The Attic. He met Sir Simon and defeated the villain, Alastor. This book starts with William being a couple of years older and Mrs. Phillips sent him a birthday present, the charm of Janus used inside the first book. The charm can be used to shrink and un-shrink things, animals, the ones. Then, if these shrunken folk spend the night time in the castle in William's attic, they wake up inside past. The attic is finished, along with a forest is away from castle.