6.6.1. Definition of a condition of candles

Condition of candles the faultless. The thermal cone of an insulator is covered weak, mainly порошкообразным for a short while from grey-yellow to brown colour. On electrodes, without a surface обгорания, порошкообразные adjournment from grey-yellow to brown colour. The internal surface of the case is pruinose light brown or from yellowish to dark brown colour. The engine works normally. The kalilnoe number of candles is chosen correctly.

The candle is covered by soot. The thermal cone of an insulator, electrodes and an internal surface of the case are covered thick enough порошкообразным by velvety touch of black-grey colour. The reason — too rich mix, insufficient receipt of air, too big interelectrode backlash, very high калильное number, and a candle in working order remains too cold. For an exit from this position to establish candles with various калильным number.

The candle is made oily. The thermal cone of an insulator, electrodes and the candle case are covered by a fat soot with oily shine. Formation of an oil deposit. The reason of it is chambered in hit of engine oil of combustion as a result of deterioration of cylinders and pistons, and also маслосъемных caps of valves.

Candle overheat. The thermal cone of an insulator is pruinose dark brown to grey-black colour, on structure стекловидным or rough and caked, on the end of a thermal cone, as a rule, a thick crust and balls. Electrodes, especially central, are amazed by corrosion. A surface mainly rough, blown up or corroded. It is possible to consider as the reason of it too poor gas mixture, not tightened candle, badly closed valves or a candle with too low калильным number owing to what it is strongly warmed up.