Spark plugs are provided in the car to perform two functions: ignite the air-fuel mixture in the combustion chamber and all detonation is unnecessary heat. Their correct work seriously affects the traction properties of the power unit, and if the engine has begun to be unstable to function at idle, "twitch" or hardly start, it is necessary to check the condition of the candles. Car manufacturers are prescribed in a technical information about how often the replacement of spark plugs should be replaced. However, often these meanings are somewhat exaggerated, and the candles have to change much more often than the vehicle developers are planning. If you have suspicious of candles, you can check their condition in the color of Nagar on the electrodes. This will make it possible to determine which vehicle systems led to the exit of candles. About this further in the article.

Nagar on Ignition Clear Causes

Ignition candles have to function in a "hard" environment in which they are not only exposed to thermal, but chemical influences. During the combustion of fuel on the candlelight, or rather, a gray flask arises on their electrodes, which signals the stable functioning of the system. However, on the candlelight, white, black or red nagar may appear on the candle, which indicates not only the need to replace the candles, and the need to urgently check the motor to certain malfunctions.

black Nagar on Ignition Candle

The most popular color of Nagar is black, and correctly diagnose the breakdown, which he shows is the most difficult. The black of black is represented in two versions, each of which indicates the appearance of a certain breakage in the functioning of the force aggregate. There are such a nagar in structure, which makes it possible to accurately detect a group of reasons for the emergence of problems with the engine.

But remember that a uniformly distributed nagar of a grayish or coffee tone indicates that there are no problems during the combustion of the working mixture. Such a nagar is characteristic of normal operation of the motor.

Black Nagar can be oily or dry in the form of soot. The oily brightly pronounced nagar, which is formed on the electrode and in the area of \u200b\u200bthreaded connections, is not rarely manifested together with another sign - blue smoke from the exhaust pipe during the start of the power unit. This type of nagar indicates that the oil enters the combustion chamber in redundant amounts. This can occur due to the following reasons:

• Outlines made on the piston.
• Piston rings were worn on the valve.
• The guide sleeves of the valve were worn.

With such faults, it is necessary to replace the worn items.

The second type of black Nagar is called "velvety". In this case, the nagar is distinguished by the absence of oil lifettes. Often, this type of Nagar indicates that the air-fuel mixture re-entered by gasoline enters the combustion chamber. So, if the candlelight formed a black dry nagar, such malfunctions are possible:

• Incorrect candle work. It is possible that it lacks energy to generate a spark of the desired power.
• Incorrectly setting the carburetor (in carburetor motors).
• If the engine is injection, the breakdown may indicate problems with a pressure regulator, which too much enriches the working mixture. In this case, as a rule, an increased fuel consumption is observed.
• In the cylinders too low compression.
• I am faulty either clogged the air filter that transmits insufficient air. It entails incomplete combustion of fuel, which settles on the electrode.

This type of nagar is more deposited on the electrode of the candle and practically does not occur on the threaded connection.

white Nagar on Ignition Candle

White Nagar, like black, has different manifestations. It can have a glossy surface, as a result of the presence of metal grains in it, or sow on a candle in the form of white large sediments.

The glossy white type of Nagar is dangerous for the power unit and indicates that the candles do not receive the desired cooling. In addition to the candle, pistons can also overheat, which entails cracks in the valve. As a rule, the reasons for the appearance of such a nagar are due to the insufficient volume of fluid in the cooling system. In addition, the glossy white Nagar can appear for such reasons:

• Incorrectly selected candle for this type of motor.
• The candle is too early issuing a spark or a spark pass as a result of an incorrect ignition.
• Fuel mixture falls into the combustion chamber.
• Supporting inlet air pipeline.

If a glossy white nagar occurs on the candle, having traces of metal inclusions, it is necessary to urgently show the vehicle to diagnosticities. It is not recommended to operate the car in the presence of such a nagar.

If a white chuck appeared on the candle, which smoothly settles on the electrode, then the problem is fuel, which is filled into the car. In this case, check the quality of gasoline and replace it, and then refuel from the other manufacturer.

red Nagar on Ignition Candle

If the auto owner applies different additives for oil or fuel, a red nagar may appear on the candlelight. This is due to the combustion of chemical additives, which are filled with junk. When a motorist regularly applies certain additives and sees that the candles are covered with red nagar, it is recommended to reduce the number of additives that are poured into the car.

The problem is characteristic when a manganese or lead is included in the additive. If you ignore the appearance of such a nagar, a layer will appear on the electrode, as a result of which the probability of sparking will decrease, which will entail unstable operation of the motor.

What does Nagar on the Ignition Candle

As you can see, the color of Nagara on the electrode of the candle exactly says exactly which breakdowns can appear in the engine. Often they are associated with the composition of the fuel mixture, the moment of sparking or temperature in the combustion chamber.

Eliminate the nap to the ignition candlelight (in detail)

To clean the candles at home, it will be necessary: \u200b\u200ba means for cleaning rust and raids for household needs, plastic cups, brushes for watercolor paints, rag.

Order of work:

1. Pour into the cup Chemical remedy, lower the electrode there and wait about 45 minutes.
2. We do similar to the rest of the products to speed up the procedure.
3. In the process, you will see the reaction: the conductor is cleaned, and the solution is purulent.
   
4. With severe pollution, use the brush to facilitate cleaning.
5. Rinse the candle under running water.
6. Wipe dry by the rag.
7. Put the product on the battery or sun so that it is dried. It is forbidden to apply a fireplace or fire.
8. In twenty minutes, check the purity of the insulator and the electrodes.
9. Now you can set the candles into the car and test them.

Useful advice

It is very important to regularly pay attention to the spark plugs and clean the data of the elements, since it extends their resource and ensures the stability of the engine function.