Care of candles of ignition of the car
It is possible to judge quality of work of a candle by the form it electrodes and a thermal cone of an insulator. If the cone is covered with a black wettish oily deposit, it is a sign that the candle is very cold for this motor. This phenomenon can indicate wear of cylinders and piston rings of the motor or on very highest level of oil in a case. The dry dark deposit happens as a result of long-term operation of the motor idling or at invariable driving on low speeds and small loading of the car, also at cool candles. If the insulator cone spotless, dry, very light, almost snow-white colour, from time to time with traces of an oplavleniye is means that the candle is very hot for the motor or ignition is established earlier. Usual colour of an insulator of truly working candle – from grey to light brown (sand). The deposit actually is absent. Service life of candles usually corresponds 25-35 thousand km of run of the car. Candles demand continuous cleaning and gap adjustment between electrodes. At saturated operation of the car these operations should be created approximately through each 10 thousand km. If year run of the car does not surpass 10-15 thousand km, to clear candles and to regulate a gap two times in a year – till summer and winter operational seasons are recommended.
For cleaning of candles it is impossible to use sharp iron subjects like a screw-driver or a pricker because them it is simple to destroy or scratch an insulator. On the scratched cone of an insulator the nagaroobrazovaniye is accelerated and amplifies, and the deposit shunts electrodes, the candle ceases to work. The suitable tool for cleaning of candles – a brush from a point of a metal wire. It is best of all to clear candles a chemical method which consists in the subsequent. Candles degrease washing in petrol and dry, after that them immerse in hot 20 % аква solution of acetate of ammonium (other title – acetic ammonium) and maintain in it during 25-30 mines at temperature not below 90’С (it is possible at weak boiling of solution). Then candles clean a rigid hair or kapron brush, perfectly wash out hot water and dry. This work should be carried out in the open air because from hot solution pairs of acetic acid are allocated. Gap between electrodes of a candle regulate avtoindent.ru a podgibaniye of a lateral electrode, thus for measurement of size of a gap it is necessary to use not thin, but cylindrical щуп (a piece of a wire of a suitable diameter). The matter is that as a result of wear in a lateral electrode there is a dredging therefore measurement flat the shchupy will give an incorrect result.