The causes of the emulsion in the engine oil. This is at least interesting. What to do if an emulsion appeared on the lid of the oil refining neck at the end of the white emulsion on the diesel

In the process of surface diagnostics, start with level check in the cooling system. To do this, you need to unscrew the lid of the expansion tank on a slightly cooled or cold unit. Reducing the level of coolant without explicit reasons may indicate malfunctions in the area of \u200b\u200bthe block head, problems with the gasket of the GBC or the cylinder block itself.

• Destruction or defects of the gasket are the most frequent cause Moisture getting into the oil. In other words, in oil there is a coolant, which is a mixture of chemical concentrate and water.

The tightness of the gasket is usually disturbed both as a result of the natural wear of this element, and after overheating of the motor. In the event that earlier had a place overheating and the gasket did not change, then the condition of the oil should be followed separately.

The natural wear of the gasket occurs due to the fact that the element is experiencing significant temperature loads, it constantly works in conditions of high pressure. As a rule, the gasket fails on runs from 100 thousand km. and more. With punched gasket, the engine works unevenly, from leaving antifreeze.

To eliminate a malfunction that occurred after natural wear, you just need to remove the GBC and replace the gasket. If the motor overheated, then may require.

• After overheating, the engine cylinder engine often "leads." This means that the geometry, the billed planes of the BC and GBC do not coincide, cannot achieve normal adjacent even after replacing the gasket. In such a situation, the engine requires more serious repairs or even the replacement of the GBC.

The exhaust gases in problems with the gasket can enter the cooling system, as a result of which, after unscrewing the radiator lid or the expansion tank, you can see the smoke and the drilling of the coolant of the varying degrees of intensity.

• The appearance of cracks in the block of cylinders or the head of the block can also arise both as a result of overheating or temperature prepads, and be the effects of wear, damage or.

In the latter case, a frequent reason is the use of flow or distilled water instead of antifreeze, filling of low quality coolant, a large amount of water with respect to the concentrate or incorrectly diluted tosol concentrate or antifreeze.

We also note that cracks or deformation of the GBC may occur if the engine immediately drown in strong frosts, which before it worked at the limit. For example, such consequences sometimes brings a sharp stop of the preheated unit after driving along the highway at maximum revolutions. More microcracks in the block and head can also be the result of accidents, aggressive operation of the vehicle, driving for serious obstacles, etc.

• Do not be excluded in the internal cavity of the engine crankcase the possibility of active condensate accumulation. This happens when weather or other conditions contribute to significant temperature differences. During such drops in the engine crankcase through the Sapun and the crankcase ventilation system gets the outer air.

In some cases, moisture from the air in large quantities can be condensed on the walls, after which it gets into the oil and an emulsion on the dipper and the lid is formed. It is recommended to solve the problem to solve the problem, in front of which the engine is recommended additionally rinse with special flushing compositions.

• Strong wear of the CPG in combination with the attack of antifreeze to the cylinders can also cause an emulsion formation. In this case, the coolant does not only enter the cylinders, but also flows through the piston rings in the crankcase.

As a result, the oil is diluted, the coolant level drops, and the oil level increases. In this case, the emulsion and loss of its protective and other properties are obviously noticeable.

We add that if the CPG is in order, then the antifreeze will not fall into the crankcase. At the same time, the strong cluster of the coolant often leads to the hydraulic man. The situation is still common when the engine starts with minor leaks, but after launching strongly.

That in the end

As can be seen, the main cause of the emulsion on the dipstick and the lid of the oil refining neck is working fluid cooling systems. In such a situation, it is recommended to stop the operation of the engine and immediately carry out repairs.

To determine microcracks and other low-challenge damage, check the GBC or BC for tightness in a special bath. This method involves the supply of air under pressure and makes it possible to detect even the smallest defects.

After the diagnosis, you can accurately make sure that the severity of the problem, as well as the possibility or inability. In any case, before checking, it should not be checked to make a decision on the need to replace damaged elements.

Finally, add that if in the cold season on the lid of the oil-tapping neck, a white emulsion is noticeable without any other reasons, with the amount of emulsion very slightly and does not go out antifreeze, then for a start it will be enough to simply change the engine oil.

It is also possible to reduce a little and the subsequent interservice interval. With the onset of heat, the problem may disappear by itself, since the car will not be subject to significant temperature differences, and the extra moisture will be eliminated from the engine along with the replacement lubricant.

Read also

Why antifreeze entering engine oil is a serious malfunction. What are the consequences for ICEs may occur after driving on a mixture of coolant and oil.

Foaming motor oil In the engine: in what cases and what is dangerous such is for the engine. The main causes of malfunction, diagnostics.

Wizards who professionally serve cars, advise changing the oil every 10 thousand mileage kilometers. However, even if these recommendations, car owners see that the Emulsion engine is in the engine. According to the consistency, it looks like mayonnaise. This composition leads both experienced car owners, and beginners at a real shock. This alone may have different colors. What is it and what is dangerous emulsion? Answers to these questions will consider in our today's article.

Emulsion - What is it and where is it coming?

Lubricant products for car engineswhich can be purchased in any auto shops, is made on the basis of hydrocarbons. In the process of burning combustible mixture Food combustion products are formed. Gasolines may contain water, alcohol, acid, peroxide. Then these substances during the operation of the motor are mixed with oil. As a result - in the engine emulsion. It appears on the lid of the neck for the bay or on the dipstick to check the lubrication level.

Many are interested in the reasons for the formation of the emulsion on the lid and on the diploma. This can be simply explained. Due to the large number of small bubbles, the emulsion becomes white. This suggests that the oil is very dirty. Also probe, and the lid is the coldest elements of the engine. Therefore, fat perfectly accumulates on these elements.

Engine Emulsion: Causes

Experienced car owners and people servicing cars say that there is a lot of reasons for the formation of an emulsion. Often, these white mixtures can be formed when cooling fluid falls into the crankcreter. This can be observed if

In addition, if an emulsion was formed in the engine oil, it is worth checking the GBC and a block. Cracks are possible in these details. Another of the reasons why cooling fluid will fall into the crankcase are deformed GBC elements. In winter, the emulsion appears due to condensate.

Also, "mayonnaise" in the motor can appear if there is no gas ventilation system or it is insufficient. Temperature carter gases High enough. They include water in large quantities. This water then falls condensate at the top power aggregate. And as a result - an emulsion appears.

To clarify the exact reason for the appearance of such a frightening "mayonnaise", you need a serious engine diagnostics. The price of such services is significantly lower than the cost of motor overhaul. It is quite difficult to determine the reasons to determine.

But, as practice shows, the reason lies in the punctured GBC laying. Therefore, antifreeze or toosol can freely penetrate the lubricating channels. There it will mix with engine oil. It must be said that if the lubricant system, the latter will immediately lose all the characteristics. Experts recommend replacing oil, and coolant. This is relevant for any power units, regardless of the type of fuel and design.

"Mayonnaise" occurs in the engine of any car if the owner neglects the regulations and does not serve the machine or if there are any serious damage. Often with the advent of the emulsion are faced in autumn and in winter - at the first frost and simply temperature decreases. But you should not immediately beat in all the bells - not every time you need the diagnosis of the engine. The price of it in different cities of Russia fluctuates from 800 p. and higher. Often, the reason for everything is an ordinary condensate, which was formed due to the temperature difference between the hot engine and street air.

When the engine warms up enough, the whole moisture from the oil will leave. However, the part will accumulate, and in the end, an emulsion will appear on the neck. Many models of cars are subject to this disease. Including "Gazelles".

Effects

When condensate, water, coolant fall into engine oil, the emulsion in the engine is obtained. Consequences - lubrication will very quickly lose its lubricating properties and specifications. IN winter time Oil sometimes even crystallizes that it does not affect the operation of the power unit. Weak oil film leads to intensive wear of almost every detail.

In such situations, and then the owner of the car learns how much it costs (from 20 thousand rubles). Therefore, if you managed to notice the emulsion, you should find the causes and immediately eliminate them.

Condensate

With this problem, owners of cars that store them in the garage are faced. Also, the emulsion is seen those motorists whose car is in the yard. If the car spends on the street every day, then in the rainy months in Carter, there will be a couple of moisture. They will then be condensed in tubes and oil highways. At once in the motor can fall up to several grams of condensate. This is enough to appear in the engine emulsion.

Bubbles will be well noticeable not only on the lid of the filler neck, but also on the dipstick. In winter, car owners will often observe the "mayonnaise" effect. If the car is operated constantly and intensively, but on short distances, the engine trite does not have time to warm up to operating temperature. This is another reason why condensate appears. You can treat the problem longer runs or warming up to operating temperature.

Problems in Carter Gas System

If the ventilation system is clogged and performs its functions not completely, then the gases, and the pairs along with them will strive to exit the dipstick or any other places in the motor. Therefore, there is nothing surprising that in the engine the emulsion falls precisely on the lid of the neck. It remains to be rejoiced, because the lubricant in this case is clean. If you fix it and the oil replacement will not be needed.

Coolant

This is the most common source of problems.

When the coolant is passed through the damaged cylinder head laying, Tosol under high pressure enters oil channels. In the lubrication system, the pressure is much lower.

Methods of diagnosis

To check the oil drained from a warm motor into the container. In the heated oil, even an inexperienced auto owner will be able to see traces of coolant. If the toosol contains a lot of water, most of the liquid falls on the bottom of the crankcase. Then this alien will be absorbed into the oil worker. If the emulsion is yellow, then from the operation of the machine it is better to be. The mixture will score lubricating channels. This will lead to the failure of the piston rings. May fail the engine valve.

Cracks in GBC and Taste

If an emulsion appeared on the lid of the neck, then often the causes of this phenomenon in violating the integrity of the cylinder head gasket. The breakdown occurs due to overheating or as a result of wear. But it can only be seen on old engines, followed by. The main sign is that the gasket is broken - unstable work Engine. You can see that from the tank.

Also, there are also cracks in the CBC and the engine block. The reason is the freezing of the coolant, more often - low-quality toosola. It is necessary to constantly check the readings of the coolant temperature sensor. Do not pour into an expansion tank or in the radiator ordinary water. It will remain inside the system, even if merged all the coolant. Then water will freeze. As a result, cracks in the canals are formed. In addition, the engine can be deformed in winter due to water icing.

Water in Carter

This problem can be eliminated only if you completely replace the oil. It is also better to perform and flushing the motor with specialized fluids. The situation when water seeps into the cylinder is very rare. It may only happen on engines with faulty rings. Perhaps the engine wear valve is guilty.

Conclusion

So, we found out where the emulsion appears in the motor. If the auto owner does not want to know how much the engine overhaul is (from 20 thousand rubles), it is necessary to regularly serve the motor. Do not ignore this symptom.

About the good condition of the car can be judged by many signs, sometimes indirectly, sometimes obviously testifying to the occurrence of one or another defect. The driver should take carefully to the whole unusual, taking place with his car. For example, when checking the lubricant in the engine before the trip, you detected a white emulsion on the dipstick (foam). What is it fraught with a car?

At the probe white emulsion - what are the reasons?

Immediately it should be noted that this, perhaps, is already a sign of a malfunction. As a rule, a white emulsion found when checking the lubrication level appears when the cooling fluid falls into the crankcase. This may occur, for example, due to:

Breakdown gasket between the GBC and the block itself;
- the appearance of cracks in the GBC or block;
- deformation of the GBC;
- getting water into the engine cylinders, and then in the crankcase;
- condensate formation in the crankcase.

Sometimes it is quite difficult to determine, because of which a white emulsion appears on the probe when controlling the lubrication level. However, the consequences will be sufficiently unpleasant. The properties of the oil deteriorate, which makes it difficult to work the engine and leads to a possible encumbrance. Eulsion on the probe

More often foam on the dipstick appears after entering the coolant lubrication system. This must be confirmed by the level of these two liquids. If on the marks when checking, the level of the latter in the crankcase has grown, and the toosol in the tank, on the contrary, it became less, then you can assume that the emulsion appeared on the above reason. It is necessary to look for a place where the coolant penetration occurs, and after eliminating the malfunction also to change the oil. Before eliminating the causes of the machine, it is better not to use the engine and the engine does not start.

And what else can I say about this?

The cause of this phenomenon may also be operating conditions. Very often, foam on the dipstick appears in winter or when cold. It is caused by the fact that when cooled of a heated car, condensate is formed. When the engine is hot, then the moisture pairs falling into the oil are evaporated, and then condensed on the lid, for example, as shown in the photo. Eulsion in oil

Often such condensate other than the cover also appears on the dipstick. Another reason for the formation of such a nastiness can be bad oil. When using good, not "pale" product, this does not happen.

The consolation can serve what is manifested only in winter and disappears when warming. Usually direct dangers This phenomenon for the motor does not represent, the adoption of emergency measures does not require. However, it is necessary to carefully monitor the levels of lubricant and antifreeze, it is quite possible that only the harbinger of breakdown gBC pads.

Let's sum up

Pretty unpleasant thing - appearance on the probe of white foam. Most often this is the result of the coolant motor lubrication system due to the breakdown of the gasket between the GBC and the block itself.

As a result, it is usually it, as well as oil, you need to change. If its level did not increase, the foam is quite a bit, and Tosola did not become less, but in addition, an emulsion appeared on the lid of the neck of the oil-tapping hole, it is quite possible that the cause of this was a poor-quality oil or a condensation of moisture that fell into it. In general, when this problem appears, you can operate the car, but here everyone decides, how to do.

But if you close your eyes and pretend that nothing happens, then after some time, you probably have to do overhaul Engine.

Substance white color With a yellow chipper on the dipstick, under the lid of the oil-tank neck indicates an impurity in the engine oil of foreign liquid. But where exactly appears an emulsion in the engine and why does this occur mainly in the cold? Consider the main causes and methods of diagnosing faults.

THE REASONS

Emulsions are formed by two unsuccessful fluids. In most cases, one of the phases of the emulsion is water. In other words, when motor oil and water mixed in the engine, in the pallet, on the dipped, the lid of the oil-tapping neck you will find a white and yellow flare. The reasons for the appearance of the emulsion in the engine is only 2:

• finding into coolant oil, part of which is water. The leakage of antifreeze manifests itself not only by the emulsion, but also by a decrease in the amount of coolant in the tank, an increase in the oil level in the pallet;

In no case continue to exploit the car if you have found an emulsion on the dipstick. In such a state, the oil loses its lubricating ability. No less dangerous to enter the engine oil into the cooling system, which is why the likelipatibility of engine overheating is large.

• the formation of condensate on the lid of the oil-tank neck in the winter season.

White raid on the covered neck

Many drivers are frightened, seeing white emulsion on the inside of the cover. But in most cases, their concerns are unjustified, since the flaw occurs due to the features of the engine in the frosty time of the year.

Moisture getting into the ventilation system of crankcase gases is a natural process. But when operating a car in the warm season, she has time to evaporate. With the onset of frost moisture is actively condensed on all cooled surfaces. When driving the engine, this moisture is completely evaporated from the surface of the heated parts. But since the lid of the oil-wave neck in frost does not always have time to warm up, condensate accumulates on its inner part. Water drops, mixing with oil pairs, forms yellow emulsion.

In other words, the main reason for the emulsion on the lid is short car runs, during which all the details of the engine do not have time to warm up. That is why such a plaque owners most often notice in winter, late autumn and early spring. If you have discovered an emulsion on the lid of the oil-tank neck, but at the same time the oil is in normal condition, it is not worth worrying. It is enough to wipe the lid and periodically observe the condition of the oil in the engine.

To reduce the amount of emulsion, periodically overcome by car a greater distance than a few kilometers from home to work and back. At the same time, we are extremely advisable to enjoy the engine at idle

How can antifreeze get into the oil?

How to determine why antifreeze gets into the oil?

Pretty rarely mixing coolant with oil occurs unilaterally. It is more likely that by finding an emulsion on the dipstick and under valve lid., you will find traces of oil in expansion tank.

In search of the cause of the emulsion in the engine, we recommend going through the smallest resistance, starting checking from easily accessible aggregates. If an oil exchanger is installed on the car, inspect its housing on the subject of leaks of antifreeze, oil fifumes. These symptoms can serve as an indirect sign that the cause of a malfunction is in the cooler.

Having found a white emulsion on the dipstick and leakage of antifreeze in the initial stage of the problem of the problem, you can restrict ourselves to the engine washing by N-multiple oil replacement. Even cheap mineral-based products can be used for such purposes. But even it is important to know how not to buy counterfeit.

If the entire filling volume of engine oil has turned into an emulsion, without complete disassembly of the engine can not do. At the same time, it is necessary to blow the channel lubrication channels crankshaft, butterflower piston group. The emulsion can clog the channels, which will lead to the sad consequences of oil starvation.

BC defecting, block head and gasket

After removing the GBC, carefully inspect the gasket and the flushing planes. Weakening zones, which become the cause of mixing oil and antifreeze, are usually clearly visible on the old gasket.

If the gasket does not cause complaints, most likely, a microcrack formed into the GBC or BC. In the article on the replacement of the cylinder block, we told how using kerosene you can check the BC at home. If possible, we recommend using the help of professionals. As practice shows, only checking on the crimping stand can reliably determine the fact of the leakage of the sleeves, oil circulation channels, coolant.

Features of GBC VAZ

In the design of the head blocks of cylinders, installed on the engines VAZ 2101, 2102, 2103, 2104, 2105, 2106, 2107 there are aluminum plugs. In rare cases, these plugs are destroyed by opening access to antifreeze to the GBC. Therefore, the owners of the specified models of the car should be remembered for the reason uncharacteristic for most machines, due to which the emulsion appears on the dipstick and inside the engine.

Conducting inspection and diagnostics of the engine, many car owners are faced with the presence of a whitish plaque on the lid of the oil refining neck and the incapability of the oil level.

Why an emulsion in oil appears: causes and consequences

The emulsion looks like a fine white foam, is formed when water or a different liquid in engine oil, with subsequent active stirring. In some cases, such a plaque is not dangerous and not worth worrying because of its presence. But it does not always happen, the emulsion in the engine oil can also point to the appearance serious problems With power installation and need for repair.

The presence of water in oil, in general, is considered unacceptable because it affects performance indicators and. But the design of any engine includes a Sapun, providing maintaining a given pressure in the crankcase. In fact, he connects inner space Power plant with an atmosphere. So through it inside the cylinder block comes with air from ambientin which moisture is necessarily present - water particles.

In the summer, the temperature difference is low, therefore, most of the water remains in a gaseous state and after it is excreted together with crankcase gases. In winter, the temperature difference is significant, so the moisture condenses into the liquid, settles on the inner surfaces of the engine, where it is mixed to engine oil. From here and takes a white emulsion on the lid of the oil refining neck.

Therefore, the presence of a small whites on this throat or probe oil level in winter It is the norm, and there is nothing bad.

Video: Emulsion under the lid of valves !!!

But the appearance of a yellow emulsion on the lid of the oil refining neck in the summer or its number is significant - this indicates problems with the engine. The same applies to the traces of the emulsion on the engine oil probe. In a working foam engine, it does not appear even in winter, and if it is detected, malfunctions appeared in the motor.

Additional signs of malfunction

As already noted, the emulsion is a mixed mixture of water and oil in the form of a foam. The abundant amount of white or yellowish foam on the lid and the dipstick signals that liquid is seeping into the engine crankcase, and it is only present in. Therefore, the place of leakage should be in the first place in those parts of the engine, where the lubricant and cooling channels take place nearby.

Note that the appearance of the leakage of the coolant (coolant) inside the engine may be accompanied by another feature:

1. A constant decrease in the level of coolant in the expansion tank and the need for a periodic tank.
2. Oil film in an expansion tank.
3. Motor oil level above the norm.
4. Abundant white smoke from the exhaust pipe.
5. Interruptions in the engine.

All this indicates antifreeze in the oil channels. If you do not take any action and continue the operation of the car, the engine due to the lack of normal lubrication will receive damage, and it will take expensive overhaul to restore performance, or full replacement Motor.

Where to seek the cause of antifreeze leak?

The leakage may occur due to:

• block head;
• gaskets GBC;
• cracks in the cylinder;
• cracks in the head block.

Start from the block head. This component of the engine is made of non-ferrous metals and the installation is strongly attracted by bolts to the cylinder block.

As a result of the expansion of the metal due to overheating, the head is warked. Some places appear gaps between the GBC and the block through which technical fluids fall into channels of other systems. That is, the coolant simply through the slits gets to oil channels and mixed up to lubricant material.

This malfunction is not very complex and is fully repaired. But for this you need to disassemble the head, grinding its surface adjacent to the block, replacing the gasket and lubricant. When changing, it is necessary to wash the engine and the lubricant system with the replacement of the "old" oil with antifreeze impurities.

But the blocking of the head of the block becomes the cause of the formation of the emulsion is not so often. A more common problem is a breakdown of gasket GBC.

This happens for the same reason. But if the head is rolled only with long-term exposure to high temperatures, then for damage to the laying of enough and short-term overheating. And since the gasket and cooling channels pass through the gasket, then the jumpers between them are destroyed. Note that it is not always a breakdown occurs only between the channels. Damage can also connect channels with a cylinder or lead the engine.

Although a breakdown of the GBC laying and the most common cause of the appearance of a white emulsion in the engine oil, but it is also considered to be easily eliminated. For this, it is enough just to replace the damaged gasket to a new one, as well as replace the engine oil and rinse the engine. An experienced motorist is able to carry out repairs within 4-5 hours.

Cracks in the cylinder although it rarely happens, but it can also become the cause of the formation of an emulsion. This is usually due to defects in the metal structure of the sleeve.

Video: On the lid of the neck of the oil Emulsion

Available defects with time can lead to the appearance of cracks in the cylinder wall, and since it is cooled, the liquid begins to leak into the combustion chambers. Most of the liquid leaves the engine through exhaust pipeBut it also falls into the pour space, hence the emulsion is taken.

Repair the engine with such a breakdown is possible only if the sleeves in it are removable and they can be replaced. But in a number power plants Cylinders can not be dismantled, and in this case the entire block is subject to replacement.

Another serious problem, the consequence of which is the formation of emulsion in engine oil, are cracks in the head and block. They can form from overheating, internal metal defect, shock loads.

Such damage to identify is very difficult, especially in the block, since the channels of lubricant and cooling pass inside it, and they are not always possible or propagating them.

Eye such damage will also fail. therefore component The engine with a crack is simply replaced.

In order not to do unscheduled engine repair due to the appearance of the emulsion of engine oil, it is enough to conduct in a timely manner maintenanceespecially touching replacement technical fluidsAnd also prevent the motor overheating. And for this it follows during the movement to constantly monitor the temperature regime.

If the problem with the emulsion in the engine oil appeared, start the search is better from the simplest - gasket cylinder. At the same time, after disassembling the head, when replacing it should be checked for the presence of warping. Make it very simple even in garage conditions. To do this, you need to put the head surface adjacent to the block, on clean glass. Ethnicity formed as a result of warming perfectly will be visible.

Usually in the head and its laying reason and lies. The cracks in the sleeves, the block and the GBC are very rare.