Caring for the spark plugs
On the quality of the candles can be judged by referring to its electrodes and a thermal insulator cone.
If the cone is covered with a wet black oily soot, it is a sign that the candle is too cold for this engine. The same phenomenon may indicate the wear on the cylinders and piston rings of the engine or at too high a level of oil in the crankcase.
Dry black soot is a result of long work of the engine at idle or at a constant driving at low speeds and low load of the car, as well as cold candlelight.
If the cone bushing is clean, dry, very light, almost white, sometimes with traces of melting - this means that the candle too hot for the engine or set too earlier ignition.
Normal color of the insulator function correctly candles - from light gray to light brown (sand). Nagar is virtually nonexistent.
Lifetime candles usually corresponds to 25-35 thousand. Km of run of the car.
Candles require regular cleaning and adjusting the gap between the electrodes. With intensive use of the vehicle, these operations should be carried out approximately every 10 thous. Km. If the annual mileage of a vehicle does not exceed 10-15 thousand. Km, it is cleaned and adjust the spark gap is recommended twice a year - before the start of summer and winter operating seasons.
To clean the candles you can not use sharp metal objects such as a screwdriver or awl, as they are easy to scratch or damage the insulator. On scratched the cone insulator accelerated and intensified soot formation and soot bridges the electrodes, the spark stops working.
A suitable tool for cleaning of candles - Brush point of steel wire.
Better clean the entire candle chemical method which is as follows. Candles were degreased by washing with petrol and dried, after which they are immersed in hot 20% aqueous solution of ammonium acetate (another name - ammonium acetate) and held there for 25-30 minutes at a temperature of not lower than 90 ° C (available under weak boiling solution). After that, clean the spark stiff hair brush or caproic, washed well with hot water and dried. This work should be carried out in the open air, as from a hot vapors are acetic acid.
The gap between the spark plug electrodes regulate podgibaniem side electrode, and to measure the size of the gap to be applied is not flat and cylindrical probe (length of wire of suitable diameter). The fact that as a result of wear of the electrode in the lateral recess is formed, so the measurement feeler gauge will give the wrong result.
Operation of spark plugs
The task of the spark plugs in the engine of a vehicle is the introduction of a spark of energy in the combustion chamber to ignite the fuel-air mixture. Plug in conjunction with other components of the engine, namely the ignition system and the fuel mixture preparation system, determines to a great mass of engine functions. The candle should be guaranteed to ensure the start, uninterrupted operation while speeding and maximum engine performance. Plug in all operating conditions should deliver spark energy in the combustion chamber without opening and overheating.
However, the spark plug may be brought against the requirements of smooth operation only under the following conditions:
• Plug is inserted into the engine only in accordance with the passport of the vehicle;
• Use only the brand of gasoline in accordance with the label specified in the certificate of the vehicle engine;
• debugged the system works perfectly and the ignition on the vehicle;
• debugged and the system works flawlessly cooking fuel-air mixture;
• Do not exceeded torque screwing the spark in the cylinder head of the engine.
On examination of the engine taken from the candles should pay attention to the condition and color of the thermal insulator cone. If the inspection of the cone will be a slight insulator layer of soot creamy brown color, it can be concluded that the thermal characteristics (type of) candles for the type of engine and its systems are working normally. Such a deposit does not disturb the work of candles and they do not need to be cleaned. With the engine on leaded gasoline to heat the cone, the normal state of the candles will be a powder coating gray shade which also disrupts the candles.
If the inspection in the thermal cone and the spark plug electrode is detected significant layer of black soot, it needs to be cleaned, and the presumed causes of fouling are as follows:
• Loose black matt varnish is a result of incomplete combustion of the fuel mixture for fuel or its pereobogaschenie result of long work of the engine idling;
• A solid black carbon deposits is a consequence of non-compliance such as candles on the motor thermal characteristic. In this case, the candle is cold and the temperature below the temperature of thermal cone of self-purification. The causes black soot may also be malfunctioning ignition or excessive ingress of lubricating oil into the combustion chamber because of the poor condition of the engine.
In the event of a significant layer of soot candle should be cleaned.
The presence of soot on the heat cone of white, light gray or light yellow color indicates that when the candle is overheated. Overheating can be caused not only by an incorrect type spark engine, but also dense enough tightening candles in the nest, the absence of or damage to the gasket, or the presence of dirt under it, as in these cases, deteriorating heat dissipation from the candle. This may also be the result of setting the ignition timing is too late, or the result of malfunctions in the cooling system. Typically, overheating spark accompanied by increased erosion of the electrodes.
On the quality of the candles can be judged by referring to its electrodes and a thermal insulator cone.
If the cone is covered with a wet black oily soot, it is a sign that the candle is too cold for this engine. The same phenomenon may indicate the wear on the cylinders and piston rings of the engine or at too high a level of oil in the crankcase.
Dry black soot is a result of long work of the engine at idle or at a constant driving at low speeds and low load of the car, as well as cold candlelight.
If the cone bushing is clean, dry, very light, almost white, sometimes with traces of melting - this means that the candle too hot for the engine or set too earlier ignition.
Normal color of the insulator function correctly candles - from light gray to light brown (sand). Nagar is virtually nonexistent.
Lifetime candles usually corresponds to 25-35 thousand. Km of run of the car.
Candles require regular cleaning and adjusting the gap between the electrodes. With intensive use of the vehicle, these operations should be carried out approximately every 10 thous. Km. If the annual mileage of a vehicle does not exceed 10-15 thousand. Km, it is cleaned and adjust the spark gap is recommended twice a year - before the start of summer and winter operating seasons.
To clean the candles you can not use sharp metal objects such as a screwdriver or awl, as they are easy to scratch or damage the insulator. On scratched the cone insulator accelerated and intensified soot formation and soot bridges the electrodes, the spark stops working.
A suitable tool for cleaning of candles - Brush point of steel wire.
Better clean the entire candle chemical method which is as follows. Candles were degreased by washing with petrol and dried, after which they are immersed in hot 20% aqueous solution of ammonium acetate (another name - ammonium acetate) and held there for 25-30 minutes at a temperature of not lower than 90 ° C (available under weak boiling solution). After that, clean the spark stiff hair brush or caproic, washed well with hot water and dried. This work should be carried out in the open air, as from a hot vapors are acetic acid.
The gap between the spark plug electrodes regulate podgibaniem side electrode, and to measure the size of the gap to be applied is not flat and cylindrical probe (length of wire of suitable diameter). The fact that as a result of wear of the electrode in the lateral recess is formed, so the measurement feeler gauge will give the wrong result.
Operation of spark plugs
The task of the spark plugs in the engine of a vehicle is the introduction of a spark of energy in the combustion chamber to ignite the fuel-air mixture. Plug in conjunction with other components of the engine, namely the ignition system and the fuel mixture preparation system, determines to a great mass of engine functions. The candle should be guaranteed to ensure the start, uninterrupted operation while speeding and maximum engine performance. Plug in all operating conditions should deliver spark energy in the combustion chamber without opening and overheating.
However, the spark plug may be brought against the requirements of smooth operation only under the following conditions:
• Plug is inserted into the engine only in accordance with the passport of the vehicle;
• Use only the brand of gasoline in accordance with the label specified in the certificate of the vehicle engine;
• debugged the system works perfectly and the ignition on the vehicle;
• debugged and the system works flawlessly cooking fuel-air mixture;
• Do not exceeded torque screwing the spark in the cylinder head of the engine.
On examination of the engine taken from the candles should pay attention to the condition and color of the thermal insulator cone. If the inspection of the cone will be a slight insulator layer of soot creamy brown color, it can be concluded that the thermal characteristics (type of) candles for the type of engine and its systems are working normally. Such a deposit does not disturb the work of candles and they do not need to be cleaned. With the engine on leaded gasoline to heat the cone, the normal state of the candles will be a powder coating gray shade which also disrupts the candles.
If the inspection in the thermal cone and the spark plug electrode is detected significant layer of black soot, it needs to be cleaned, and the presumed causes of fouling are as follows:
• Loose black matt varnish is a result of incomplete combustion of the fuel mixture for fuel or its pereobogaschenie result of long work of the engine idling;
• A solid black carbon deposits is a consequence of non-compliance such as candles on the motor thermal characteristic. In this case, the candle is cold and the temperature below the temperature of thermal cone of self-purification. The causes black soot may also be malfunctioning ignition or excessive ingress of lubricating oil into the combustion chamber because of the poor condition of the engine.
In the event of a significant layer of soot candle should be cleaned.
The presence of soot on the heat cone of white, light gray or light yellow color indicates that when the candle is overheated. Overheating can be caused not only by an incorrect type spark engine, but also dense enough tightening candles in the nest, the absence of or damage to the gasket, or the presence of dirt under it, as in these cases, deteriorating heat dissipation from the candle. This may also be the result of setting the ignition timing is too late, or the result of malfunctions in the cooling system. Typically, overheating spark accompanied by increased erosion of the electrodes.
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