Black smoke from the diesel exhaust pipe. Black smoke from exhaust black smoke with a sharp press

In principle, many car owners do not pay special attention to the smoke from exhaust pipeIf its number decreases after a complete warm-up of the machine, and in the process of movement smoke and disappears at all. However, if the smoke does not stop and when driving is explicit sign More or less serious malfunctions in the car motor.

These malfunctions are trying to pay attention to the driver's attention, exacerbating when the engine is started and manifests themselves in the form of smoke of various shades - white, black or blue-sizogo. You should carefully treat these alarms and to identify a malfunction in time before it takes difficult and costly.

About the nature of exhaust smoke

The color and consistency of the smoke from the exhaust pipe can be figuratively compared with the freshness of human breathing - a healthy organism (and biological, and mechanical) exhales, respectively, cleaner pairs than the sick. In a serviceable car, when combustion of fuel, water and carbon dioxide are formed - as in pairs from the breathing of a healthy person. However, it is necessary to take into account that the combustion of gasoline does not occur on pure oxygen, but with the help of ordinary air, for the most part consisting of nitrogen.

That is why there are harmful nitrogen oxides (NOx) in smoke from the exhaust pipes of cars, which are negatively affecting the state of the atmosphere and even leading to the fall out of the so-called acid rain. Yes, and the fuel is oxidized and burns not completely, even in the engines of the newest brands, and because of this, there is an additional carbon compound emissions - CO and CH. In addition to all this, when the combustion of the oil or coolant is burning into the chamber, there are other, no less harmful, chemical "cocktails".

Of course, the exhaust system of modern motors can be equipped with various neutralizers and filters. However, this is not enough - remember the dense clouds of Smog in the photos of the largest megacities. In addition, any filtering systems wear out over time, thereby increasing the toxicity of the smoke coming out of the car's exhaust pipe. Although, as mentioned above, the color and toxicity of smoke depends not only on the dissent of the mechanisms of self-regulation, but also from many other faults.

Most often, more or less thick smoke from the exhaust pipe signals the car owner on the malfunction of the fuel feed and engine cooling systems, as well as the problems of the distribution mechanism or piston group. In each of these cases, there are their nuances: either fuel combines deficiently, or the cylinders arrive, and sometimes oil. Actually, it is the surplus of fuel or the presence of foreign substances in the cylinders and give exhaust gases with various shades.

In general, the color of the smoke from the exhaust pipe is almost the same - there are differences only in the nuances, since sometimes problems of a certain system causing smoke are directly related to the malfunction of other systems that cannot "declare themselves" with the help of smoke. For example, this situation is not found: the cooling system does not work, because of what. Due to overheating, piston rings are burning, which entails oil entering the cylinders and, as a result - the appearance of smoke. Notice that the initial reason lies at all in the piston rings, but in the cooling system.

That is why, starting to seek the reason that caused the smoke from the exhaust pipe should be extremely thoroughly analyzing and comparing all existing factors. The most common combinations of such factors and possible shades of smoke We now consider more details.

The origin of white smoke

Often, especially in cold weather, on mode you can notice the white smoke from the exhaust pipe. The appearance of a white cloud (essentially not smoke, and steam) is often associated with the full cooling of the engine per night. Water steam is a natural satellite of the fuel combustion process. When the exhaust system cools over the night, the water condenses, and as the system begins to warm up - water condensation decreases and the warm evaporation becomes visible in cold air. Thus, white smoke depends on the ambient temperature: the colder on the street - the more apparently the white cloud becomes becoming. In addition, the degree of saturation of the steam is also associated with air humidity - with high humidity of the couple hustling.

What indicator of "health" of the car is the presence of such a smoke from the exhaust pipe - bad or good? It depends on several consideration points. Exhaust with sufficient water vapor indicates the efficient operation of the motor. However, as for the exhaust system directly, the intensive formation of a white pair cannot be called good sign Her works. If such a couple appears even in warm weather - you need to check the cylinders for the coolant in them. Wherein special attention It should be paid to check the tightness of the block head block.

The coolant includes water - and when it gets into cylinders, it does not have time to evaporate in the process of combustion of fuel, which leads to the formation of white smoke-steam. By the way, sometimes it can acquire an oily peppy tint - it also depends on the composition of the coolant. In general, to distinguish smoke from a couple easily: steam is dissipated almost immediately, and after smoke in the air, there is a light mist for some time. You should also know that fluid getting into cylinders leads to intensive pollution of the spark plugs, from which they begin to spoke, and in the end the cylinder cannot work fully.

Also, the intensive selection of white smoke from the exhaust pipe may indicate that earlier the engine did not warm up to the necessary temperature - for example, due to the fact that the car was moving only for short distances. In this case, a certain amount of water necessarily remains in a silencer and exhaust pipes, and this "is not good", because it may entail the emergence of corrosion foci.

SIZY smoke (possibly with a bluish shade)

The following in our smoke classification will consider sIZY smoke from the exhaust pipe. In most cases, the appearance of the nasal and blue exhaust smoke has a "oil" nature. Usually this situation is associated with the combustion of oil in the cylinders - most often it concerns cars of old brands, since their engines are already on enough high degree wear. The cylinder walls in such motors are thinned, and therefore piston rings are no longer able to provide proper seal. As a result, the oil is removed badly, its consumption is growing, and the compression decreases - that is why the "tired" machine begins to smoke with a sizy or blue exhaust.

In some situations, when the motor wear is not yet critical, the cylinders can remain in a sufficiently good condition, and the cause of the siza smoke coming out of the exhaust pipe is only in the focused rings. Especially often the kink rings and, accordingly, lose mobility when the car works for a long time (it also applies to oil). One way or another, but when the appearance of blue smoke, Willow-Neil's car owner should think about serious repair with a complete turning of the engine.

However, there are less fatal causes - for example, the oil-giving caps that the valve rods are compacted. Since they are made of rubber, then over time they can lose the pristine elasticity, which entails leakage of the oil. In these cases, oil through the gaps enters the intake collector, and from there to the combustion chamber, which is the condition for the appearance of the Size exhaust. Of course, if the case is in the cap, then the troubleshooting will cost the car owner much cheaper than the complete analysis and prevention of the motor.

It often occurs quite often when the oil is consumed due to the incorrect operation of the ventilation system, in this case - the ventilation of the engine crankcase. At the same time, the oil falls into the crankcase due to the fact that the pressure in the cylinder increases so much that the sealing of the pistons no longer copes with the exhaust gases formed during the combustion of the fuel. It is "thanks to the combustion of undesirable gases and the uncharacteristic smoke from the exhaust pipe appears. The engine is trying to independently pump out the gases, reporting with the inlet system. Because of this, the gases are rebuilt, and then go through the exhaust pipe. The main harm at the same time causes an oil "fog", which stretches outside the gases inside the motor and interacts with its details, which leads to the appearance of a siest-blue smoke from the exhaust pipe.

It is a ventilation system to cope with these undesirable processes: in good condition, it must separate the oil and adjust the flow rate (since the engine runs on the principle of the pump and is able to create too high discharge in the inlet system). So, if the ventilation is corrupted - oil consumption, respectively, increases. However, if we talk about the cost of eliminating this problem, it is quite small, especially if the owner clearly realizes, with which it does, and will not allow himself to deceive the employees of the maintenance station.

Black Smoke - Cause in Fuel

As can be seen from the name of this subsection, the black smoke from the exhaust pipe most often must be the appearance of problems with combustible. The black exhaust color is due to the color of the soot, which is formed as a result, for example, incomplete fuel combustion. Soot appears when the decomposition process is underway on the elements of the part of the fuel, which is not enough for full combustion.

Modern cars are equipped with computer systems that control all processes occurring when moving - including the process of combustion of fuel. Under such "sensitive guidance", the risk of error in the formation of a combustible mixture is significantly reduced - although by and large it concerns only gasoline engines, while diesel, even the most modern, will still smoke.

This is due to the fact that the composition of the mixture differs from gasoline fellow - its concentration in this case is heterogeneous and contains in itself the inclusions of high fuel density. To give her homogeneity, modern auto industry uses the mechanisms of increased injection pressure - however, even this measure is not yet able to completely eradicate the problem, and therefore painted by soot smoke from the machine exhaust pipe with diesel engine You can see much more often than gasoline cars.

In the last brands, anticorate filters are used, which is to some extent solves the question (however, these filters must be cleaned periodically, and sooner or later - change to new).

In addition to incomplete combustion, other factors can be caused by black smoke from the exhaust pipe - for example, insufficient gasoline quality. It should be remembered that the use of poor-quality gas can entail too fast combustion process - such a combustion is also called detonation. Another factor affecting the intensive formation of soot may become a malfunction for the most notorious electronic system, which follows the efficiency of fuel combustion. For example, the refusal of the oxygen sensor leads to the fact that the electronic unit It is not able to control the completeness of the combustion - and then it begins to work at the NAOVUM, while not supporting the full "dialogue" with an oxygen sensor.

Video - white smoke (pairs) engine

Video - the appearance of blue smoke from the exhaust pipe

Video - cold launch Nissan Skyline and the appearance of black smoke from it

CONCLUSION!

So, smoke from the exhaust pipe, regardless of its color, should not leave the car owner indifferent - because, thus, the car signals about malfunctions. We wish all our readers of good cars and smokeless trips!

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Elevated engine smoke indicates those or other malfunctions in its work. The color of the smoke serves as an important diagnostic sign.

Why is the black smoke from the muffler?

Black smoke is often accompanied by a large fuel consumption, poor launch, unstable engine, high toxicity exhaust gases, and often the loss of power due to the non-optimal composition of the fuel and air mixture.

In carburetor engines, the black smoke usually occurs due to overflow in the float chamber due to the defect of the needle valve or due to the location of the air jets.

In gasoline engines with electronic fuel injection, the reobey of the mixture appears, as a rule, when malfunction and failures of various sensors (oxygen, air flow, etc.), as well as with nozzles of nozzles. The last case is dangerous with a hydroudar in the cylinder when starting with all negative consequences. Diesels black smoke sometimes appears not only with violations in the pump high pressure, but also with a large insertion angle of injection.

The operation of the engine with such faults is not only difficult, but also extremely undesirable, because it quickly leads to new, much more serious trouble.

Why is the muffler goes white smoke?

White smoke from the exhaust pipe is quite a normal phenomenon for the warm engine warming modes. And this is not smoke at all, but couples. Water in a vapor state is a natural fuel combustion product. In the untenaled exhaust system, this pair is partially condensed and becomes visible, and water usually appears on the cutting section of the exhaust pipe. As the system warms the condensation decreases.

The colder the environment, the more dense and white it turns out steam. At temperatures below -10 ° C, white pairs are formed and on a well-heated engine, and when frost in minus 20-25 degrees, it becomes thick white color with a SIZY Tint. On the color and saturation of the pair also affects the humidity of the air: the more it is more, the pairs are thick.

White smoke in warmth time and on a well-haired engine is most often associated with the getting of coolant into the cylinders (for example, through a non-grinding of the block head).

The liquid can fall into the cylinder due to not only damage to the gasket, but also cracks in the head or block of cylinders. All these defects when operating the engine cause exhaust gas to the cooling system (sometimes there is even a gas plug), which serves as the basis for recognition.

All problems associated with the white smoke from the exhaust pipe are usually caused by the overheating of the engine. You should check and eliminate malfunctions in the cooling system - it is possible that the thermostat does not work, the power sensor, the coupling or the fan itself, the radiator, the radiator, its plug, hoses, or connections.

If the white smoke and the accompanying defects are noticed, then the car cannot be operated.

Why is blue or gray smoke go from the muffler?

The main reason for the appearance of blue smoke is to enter the oil into the engine cylinders. The "oil" smoke can have different shades - from a transparent blue to thick white-blue, which depends on the mode of operation of the engine, the degree of its warm-up and the amount of oil entering the cylinders, as well as illumination and other factors.

It is also obvious that the oil smoke is accompanied by increased oil consumption. Thus, at a flow rate of about 0.5 l / 100 km, the SIZY smoke appears mainly in transient modes, and when 1.0 l / 100 km is reached on the modes of uniform movement. By the way, in the latter case, in the transitional modes, the oil smoke becomes dense blue-white. True, owners of the most modern machines need to remember the possible presence of a neutralizer that is capable of cleaning traffic fumes From oil even with sufficiently large expenditures.

The wear of the details of the cylinder-piston group is one of the most common causes of the appearance of oil smoke. There are often cases when, with a relatively decent state of the rings and pistons, the surface of the cylinder is damaged. This happens, for example, with poor oil filtration, when abrasive particles fall between the piston skirt and the cylinder. Then the cylinder arises scratches.

A similar situation is real and after a long parking lot, when corrosion foci may appear on the surface of the cylinders and rings. The same effect often occurs when the engine repair technology is impaired, if the surface of the repaired cylinder is too coarse or the cylinder is irregular, or low-quality pistons and piston rings are used.

Another note on the characteristic circumstances. When there are no large wear of parts, then blue or blue-white smoke is clearly observed only when driving the engine, gradually decreasing and even disappearing. The reason is simple: heating, the details acquire the form and occupy the place at which they are better adjacent to each other. With excessively large wear, the picture is inverse: smoke on a warm engine will increase, as it is easier to get hot oil, having a low viscosity, it is easier to get into the cylinder through worn items.

In engines with turbocharged oil consumption, accompanied by blue smoke, is possible due to a turbocharger malfunction, in particular, the wear of bearings and the rotor seals. Wire of the compressor front bearing seal gives a picture similar to failure masonry Caps (Including oil nagar on the candlelight), but at the same time in the inlet pipe of the compressor is collected by a puddle of oil. Malfunction of the sealing turbine is difficult to determine because the oil comes directly into the exhaust system and goes there.

In operation, the blue smoke and oil consumption often appear when one of the cylinders is disconnected due to the malfunction of the ignition or with the valve leaks. In the latter case, smoke becomes white-blue, especially if the valve has an explicit mark. Such a defect is determined without difficulty - compression in this cylinder is insignificant or absent at all, and abundant black Nagar appears on the candle, often in the form of growths.

There are also quite exotic defects that cause blue oil smoke. So, U. automatic boxes Transmission with a vacuum load sensor is possible to break the regulator membrane. Since its cavity is connected by a hose with an intake manifold, the engine begins simply sucking the oil from the gearbox.

Black smoke from the exhaust pipe - reasons, consequences know, to great relief, it does not speak of a serious engine breakdown or auxiliary systems to it. But if it is not possible to eliminate this problem in time, it is possible to bring the flow system to the deplorable state, the fuel ignition system, as well as the engine itself, because they are the causes of black smoke from the muffler. It manifests itself: - in the form of a thick black exhaust from the silencer, especially strongly goes when you press the gas pedal. Moreover, the car is not stable, often the motor "Troit", poorly starts in the morning (especially in winter time). Increases fuel consumption. The main reasons for black smoke speaks of too saturated (re-entered) fuel-air mixture. A lot of fuel comes into the cylinders, which does not have time to effectively burn, so exhaust is repainted in black. It is much toxic and more harmful than the normal exhaust, because even the catalyst cannot contribute to the combustion of the surplus of fuel in the exhaust. The main reason for this fault of the fuel supply system is found in all types of engine internal combustion (gasoline, diesel). The second reason may be a malfunction in the ignition system, the fuel does not ignite in the chamber and therefore the raw mixture goes directly into the silencer, and the engine will mercilely "troit". In the carburetor ignition, the carburetor is quite simple - if the exhaust is painted into gray-black tones, there is no stability of work in the first place to watch the carburetor itself. Most likely, there is a place here to overflow in the float chamber. This happens for two reasons: 1) the "needle" (needle valve) is defective, it can shindle or, on the contrary, skip the excess fuel. 2) clogged, stuck (from our fuel) jets. Small "nozzles" with precise size. You need to disassemble the carburetor to clean it, if it does not help, then you need to buy Repair Kit and replace the "needle" and jets and correctly set the level of gasoline in the chamber. The injection version here is all a bit more complicated on the one hand, and easier on the other. The injector has no cameras with a float of needles, etc., this is a completely different system that supplies the fuel and air mixture with electronics. Injection in cylinders occurs with special devices - "Injectors", from here and name. The main reasons for the black exhaust: 1) the injector itself is often the cause, he simply clogs and cannot normally apply fuel. Pressure accumulation occurs, and then "strong" injection is often with surplus. The engine work will not be stable, then low revs, then high - simple words will "swim". In such a situation, you need to clean the injectors, there are many different ways, from the removal of fuel rail, to special Tools Which is added to gasoline - to solve you, but after such manipulation it is often possible to get rid of black smoke from the exhaust pipe. Performance is restored. Cleaning you need to do at least once every 60 - 70,000 kilometers. 2) Since the system is automated, it monitors various cycles using sensors. So if the sensor is not in good condition, it either will not allow the car at all, or it will serve too much fuel. There you can hardly easily digitate the breakdown, you need to go to a hundred. 3) Fuel pump. Usually in the injectors, it is in the tank, there were cases when he applied increased pressure. What also led to overflow in injection chambers. Again you need to replace. Diesel engine at all diesel engine This is a record holder in black exhaust. The thing is that he has a slightly different fuel ignition system (from pressure), and it works on a diesel engine (diesel), and even in normal condition gives a little black exhaust. Recall at least our "KAMAZ". However, in recent times, it is struggling with such exhaust, it is very toxic and poisonous, it contains a lot of lead. Therefore, it is now almost on all dieselms "the particulate filter", in favor of euro 5 standards, it cleans the exhaust and does not give to penetrate the air with harmful substances. Causes of black smoke: 1) This is a trite failure squeeze filter, it just needs to be replaced. However, the intensity of smoke will not be so high. 2) High pressure pump broke. It goes overflow. Just need to change. 3) Incorrect ignition advance angle. Need to adjust. What can lead such smoke from the exhaust pipe if it does not take action on time, then you can run into decent malfunctions. For example, injector cars, the catalyst is quickly dying, but it is not very cheap to replace it (many even remove it). Also, if it is large overflowing through the "Injector", it can cause almost to the hydrodar, because sometimes fuel is fed in liquid form, and not in the air mixture. It is very dangerous, difficult breakdown. On a dysel from a large amount of fuel, it can break the block, because there is even more pressure than gasoline engines. As you can see, the black smoke itself does not carry difficult faults, but if it does not react on it on time, it may pour out big problems.

Determine the malfunction of the machine for indirect features is a pair of trifles for an experienced driver. He will easily tell about the problems of the "horses" on the strange sound (whistle, a screen or knock) or the color of the smoke of their exhaust pipe. But can you really diagnose a malfunction one by one only shade of exhaust? - quite. At the same time, in practice, black smoke from the exhaust pipe is not the only option. He is still white and blue. But talk about it more.

What color from the exhaust pipe is the norm?

Before we consider some deviations from the norm, let's decide on the optimal tint of the "smoke curtain." For example, you sit in another cold car and start the motor. From the exhaust pipe begins to pour smoke white color. During the warm-up of the machine, this is quite logical. In essence, you see not smoke, as such, and steam evaporation. The engine is gradually gaining a temperature, and condensate is clearly seen by the human eye. After the final warming of the power node, evaporation almost will not.

Note that if the temperature overboard is less than 10 degrees of heat, then the smoke of white color from the exhaust will always go out - even after heating the car. If the outside of frost (for example, from -10 and below), the exhaust gases become dense. It is also worth remembering that the thickness of the smoke depends on the humidity (if the moisture is high on the street, then the smoke will be thick).

Tints and diagnostics

For a better understanding, we will discuss each of the options:

1. Black smoke - explicit evidence too enriched fuel mixes. What does it mean? Finding into the combustion chamber, one part of the fuel is flammable, and the second is thrown into the exhaust system. Under the action of ultrahigh temperatures, the underworked fuel decomposes, and at the exit we see the black soot.

Therefore, you should look for the problem in those nodes that are responsible for enriching a combustible mixture before injection into the engine. Such can be attributed to the system:

Injection distribution;

Ignition;

Nutrition.

Most often, the appearance of smoke is not the only symptom of malfunction. At the same time, you can notice the engine malfunctions, problems with the launch of the power node, a reduction in power, high toxicity of gases and so on. In addition, when analyzing the problem, you must consider the type of engine from the type of fuel:

On gasoline cars with automatic system Injection The cause of the malfunction can serve a breakdown of one of the numerous sensors, a disorder of the integrity of the nozzle housing, malfunctions in the operation of the control unit and so on. The most dangerous of the listed problems is a malfunction of nozzles, because with the loss of tightness, the likelihood of a foreign fluid in the engine is large, and there is not far from the hydroward;

On the diesel cars The appearance of black smoke is often caused by two reasons - by changing the angle of ahead in a large side or failure (malfunctions) of high pressure pump.

It is impossible to leave such a malfunction without repair. Otherwise, the elements of the CPG (cylindrophone group) are much faster. Fuel departing from the combustion chamber literally "licks" lubrication on the cylinders. In addition, the unlawful composition necessarily enters the oil and worsens its operational qualities. In this case, it may take full replacement lubricating fluid.

1. Blue (sometimes gray) The color of smoke is the result of entering and further inflammation of the oil in the combustion chamber. In most cases, the owner of old cars faces this problem, the engine of which is already delivering their the last days. Thus, the walls of the power unit were already wear out, the piston rings became "sieve" and do not create due compression, the engine begins "there is oil" and its power drops. The cause of oil entering the combustion chamber can be simply defective rings, which over the years of service were closed and lost their former mobility.

Solution to the problem - overhaul Engine. But, by the way, everything is not always so sad. Another malfunction is possible, which many forget about the deformation and loss of the elasticity of rubber caps, which play the role of sealing valve rods. In this case, the costs will be much smaller.

And also, if on your car turbocharged engine, then the appearance of blue smoke may indicate the failure of the turbine.

1. White smoke in some cases (we mentioned above) should not be surprised by car enthusiasts (for example, when it's cold outside, and the car is not free). But how to react to such an exhaust color, if the engine is already "doser", the temperature overboard is more +10 degrees Celsius?

The main reason is the attachment of antifreeze (toosol) to the cylinders of the power node. How is it possible? There are two options - the gasket burned under the cover of the cylinder head or cracked the unit itself. Further everything is simple. The coolant comes together with the fuel-air mixture into the chamber, naturally, does not burn and does not evaporate, but is converted to a thick smoke of white. The most interesting thing is that the shade of the exhaust may vary, depending on the humidity, the composition of the coolant (antifreeze, toosol, water) or lighting on the street (day, artificial).

How to determine exactly the malfunction in the cooling system? Get out of the car, attach any piece of paper to the exhaust pipe out and let him dry. Water quickly disappears, and after it there is no greasy spots.

Worst of all, if the cause of white smoke is a crack in the cylinder block, because exhaust gases can enter the cooling system. This, in turn, leads to the creation of gas traffic jams. In order to make sure that, unscrew the covers on the radiator and the tank with the coolant. An explicit "aroma" of exhaust gases from tanks immediately will be given.

Find a damaged cylinder (if necessary) is also easy - unscrew all the candles and appreciate their condition. One of the candles will have a perfect look, without a track of Nagara. It is easy to explain. The coolant after it falls into the cylinder, clears everything around to the shine (unless ordinary water was not filled as a coolant).

One more possible reason Toosol (antifreeze) in the motor - damage to the rubber gasket on the intake manifold manifold. If so, then the cooling fluid finds itself the road through the inlet system. It is very difficult to diagnose such a problem - the pressure remains at the same level, there is no smell of exhaust. But! The oil begins to be smoothly converted into the emulsion, and the volume of coolant in the tank decreases sharply.

Output

Remember that the appearance of white, SIZO (blue) or black smoke from your car requires operational solutions and quickly eliminate the problem. In case of inaction, the further operation of the car may be at all in the question.

During the engine operation, the color of the exhaust gases may be different, this is a kind of indicator in what state is your unit. In the corrected motors at startup, the smoke of white color is launched. If the engine is faulty, or is in an unsatisfactory state, it can smoke white, black, blue, or a naizy exhaust.

If during the operation of the engine there is a permanent white, black, blue or gray smoke, it serves as a reason for checking it.

Consider why the black smoke appears when the engine is started, which says the SIZY smoke, as well as why the engine goes white smoke.

What does the exhaust of the car

The exhaust may be different color, sometimes noticing smoke, not typical of your car, should be thought out and check the condition of the power unit.

White exhaust color can appear after long parking car. This is due to condensate, which accumulates in the graduation system and begins to evaporate when the motor starts. The outer air temperature also affects the formation of white smoke. The colder, the more smoke goes longer.

Therefore, in frosty weather, smoke can constantly go. Worse, if the white smoke goes to warm weather. This may indicate that the cylinder got working fluid From the cooling system.

In this case, you need to disassemble the motor, remove the head of the cylinders, change the cylinder head gasket, repair cracks, check the tightness of the head and the like.

To check, and confirm that the liquid fell into the cylinders you need to perform a number of actions:

• Turn the motor, open the cooling system of the expansion barrel and check whether there is a liquid drilling. If the drilling is present, therefore, the gases break into the cooling system. If the motor is silent, the coolant level is reduced, as part of it goes into the engine cylinders.
• Attention should be paid to the color and condition of the liquid in the cooling system, the smell of gary, the presence of fatty spots on the surface, color change, density, etc. It can talk about microcracks and defects in the motor.
• It is necessary to check the oil level, the case of the case when it rises as a result of fluids from the cooling system. Consequently, motor oil It is diluted and muttered, an emulsion appears in it.

Before eliminating the problem, the engine is better not to use, in order not to aggravate the situation. In the worst case, as a result of a large accumulation of fluid in space above the piston, a hydraulic blow may occur. force aggregate Cancellation and will lead to expensive repair.

Black exhaust gas engine It gives us, as a rule, when starting, it occurs because of the problems in the system. In this case, there is a strong enrichment of the working mixture of fuel and air, more fuel fall into the combustion chamber than necessary. Signs of this situation are as follows:

• Engine launch is difficult;
• Candles are filled with fuel;
• When starting the power unit, it works with failures, not stable;
• Strong noise in the work of the muffler, cotton;
• High fuel consumption;
• Motor does not give the former power;
• The on-board computer issues an error;
• The smell of gasoline when working as an aggregate

When the engine is running, the color may vary, from gray to coal black. This is due to the fact that in the course of work a large amount of soot accumulates and over time it is thrown into the atmosphere.

The reasons that lead a lot to disruption are quite a lot. It is necessary to start looking for malfunctions from fuel supply systems. On the carburetor engines It is necessary to check the dosage device, fuel, aerial jets, Float Camera.

It is necessary to check the ignition system, it happens that when there is a failure of some element, some kind of ignition coils, high voltage wiresCandles, failure in the engine as a whole.

It is necessary to check the condition air filterWhen it is contaminated, the mixture falling into the cylinder will contain a lot of fuel.

Injector engines sometimes fail electronic system Engine control. Transmitting incorrect data to the control unit, the controller increases the fuel supply. What in turn leads to an excess of the fuel mixture.

Also nozzles in the engine can lose hermeticity and overflow fuel into the combustion chamber.

Pouring the candle fuel, not only his oversupply, but also many other problems. For example, washing the oil films from the cylinder walls, as a result, strong wear of the cylinders and the piston group. In addition, a large amount of fuel falls into the engine crankcase, which leads to oil dilution.

In any case, the motor needs complete check, setting up and eliminating faults, otherwise the consequences will be very expensive.

The SIZY smoke during engine operation, signals that engine oil falls into the combustion chamber.

It will indicate about oil in the cylinder increased flow Oil engine. Causes of oil hits:

• Strong wear of the details of the piston group;
• Breakdown of the gas distribution mechanism

When wearing parts, the failure occurs piston rings, Defects appear on the piston, cylinder walls.

When the gas distribution mechanism breaks, there is no seal in the valve rod area and the valve guide sleeve.

For repair, it will be necessary to replace valve seals. Measure compression in the engine. If the decrease in the compression is insignificant, then, as the SIZY smoke is working, it disappears, since the gaps are reduced during warming. In case the gaps are large and smoke does not stop, it is necessary to repair.

Let's sum up

So, to eliminate the smoke of black, white, blue, sometimes enough of the fact that you need to replace the filter and clean the injectors. Whereas in more serious cases it is necessary to repair the engine and its mechanisms.

It must be remembered that if the engine has become black with anything, it is necessary to replace the fuel, as poor-quality fuel, with a high content of additives and undesirable impurities, leads to a change in the color of the exhaust and the difficulty of combustion of the mixture.

You should not forget that the drive belt of the gas distribution mechanism must be installed by labels, valves and phases of the gas distribution are clearly adjusted, the thermal clearance of the valves, is properly installed. Spark plugs, during diagnostics, help estimate the status of the engine.

From all, many other indicators, the stability, reliability and durability of the power unit depends directly.