Problems with the ignition system of petrol engines lead to the fact that the car is bad start. In winter, heated carburetor longer, the temperature of fuel-air charge much less, the speed drops. All this leads to what is on the skirt insulator candles formed Nagar. How to make a start gasoline engine in winter safe? Read this article. When starting a cold engine carburetor with defective candles, then condensation of fuel on-insulator candles heavily moistened snuff, pads and quality deteriorate. If on the heat rating number to pick the right candle, the facility will have a light brown or light gray color. If the matte black carbon deposits appeared on a candle, which is twisted from the warmed-up engine, then it shows the following reasons. Firstly, at low loads and idling too adjusted carburetor. Second, under certain operating conditions, when the average temperature regime skirts insulator surface is insufficient, as self-cleaning in cold spark occurs. In this case, using the gas analyzer to check the concentration of CO at idle. If necessary, try to adjust the carburetor. If the carburetor is properly adjusted, then it must be replaced by a hot candle. The length of the thread surface of the insulator, the engine capacity and the cooling of the cylinder head temperature depends on the operating mode Candles (head temperature when liquid cooling to 50 - 100 degrees lower than with air cooling). Ignition from hot surfaces candles instead of a spark, or, in other words, the glow plug can start if the temperature regime of the central electrode and the insulator is too high, in the range of 1000 degrees and above. Manage this process is impossible for the reason that ignites much earlier. As a result, the candle burns down or bottom of the piston goes bust. At full load and high speeds occurs glow ignition. In order to bankrupt the plunger or the candle burned in the high-speed engines, it is sufficient 20 to 40 seconds. When the piston goes bust, the motor immediately jammed, preventing any possibility the driver to turn off the highway. Engine power drops by 10-15%, but it can be seen at once. Also appear dull thud when glow ignition, but at a high speed machine and a considerable level of noise they are usually not audible. To avoid the heat rating of ignition should follow the following instructions: To prevent too early to install ignition fill the tank with only one type of gasoline, which corresponds to the carburetor engine, continuously review the candles and to monitor their condition. If the temperature reaches the limit and will soon begin glow ignition (evidenced by the white color insulator), motorists need to install another candle with higher heat rating number. Do candles glow of domestic production number can be determined special installation, which is a single cylinder, supercharged. The pressure can rise to the onset of heat rating plug, then fixed by heat rating number, or the pressure cycle, the average indicator. Heat rating number is large when liter engine capacity and compression ratio becomes higher and the speed of nominal. Candle with increased heat rating number is set in a two-stroke engine or a motor with air cooling. The old mark of candles foreign firms to heat rating number was performed on second time, and only then began to glow ignition of the special unit. The value of foreign-made candles is greater than about 10 times the rate of heat rating in the candlelight of domestic producers. Nowadays, many companies indicate the number of glow conditionally, it leads to difficulties and confusion in the selection of candles. To facilitate the task should carefully examine the table of candles leading domestic and foreign firms. Due to the fact that weather conditions in our climatic zone in winter and summer are absolutely different each other, respectively, and working conditions vary candles. Therefore, there is every motorist should be two sets of candles: for use in the summer - cold and winter - are hot. In recent years, produced a candle with a fluctuating temperature characteristic, which depends on the load. This is achieved by making the center electrode and side electrode made of copper. They are called "Supertermoelastik. In these electrodes provide optimum heat dissipation and reduce heat. Some portion of the electrode, which is located in the combustion chamber cover material such as nickel or chrome. This material is heat-resistant. Candles, manufactured by domestic firms have the letter M to denote the model, for example, A17DVRM. Candles foreign firms are denoted as: WR7DC or WR7DP Bosch. Here, the last letter indicates the type of material of the central electrode: P - platinum, - copper, S - Silver. Candle of the new type of shallow thermal characteristics of one brand with a copper or platinum electrode pair replaces the old spark production. This means that such candles need not be changed, depending on air temperature. Electric heater located in the facility candles to eliminate shunting spark when it gets condensation. But the spark of this kind have not been diffused. In the case when the ignition spark, so to speak, throwing, and petrol fell by an insulator, then it is better to take out this candle, warm what some materials at hand and quickly screw the cylinder head. If the carburetor is adjusted correctly and the engine in good condition, in the winter at -20 ...- 25 degree motor vehicle must earn. Not to destroy the surface of an insulator, it is undesirable to use sandblaster to remove the soot. Better to take a candle and turn it over, and pour the solvent or gasoline, then take a wooden stick and gently clean the carbon deposits. Sander can be used to remove the thick layer of sludge or gummy deposits of lead deposits, which appear after a long work on leaded petrol. For reliable starting gasoline engine in winter should periodically check the spark gap, a cylindrical probe. If the diagnosis to probe plane shape, the gap may actually be a bit overstated.
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