Coal absorber of gasoline vapors. Adsorber: device, principle of operation and malfunctions

01.10.2021 Lubrication system

On the above vehicle, the adsorber appeared a long time ago, after the introduction of the Euro-3 environmental standard. Thanks to this regulation, cars had to be equipped with a special device that could contain the evaporating fuel before it enters the atmosphere.

On a VAZ-2114 car, the absorber has the shape of a black cylinder, which is installed in the engine compartment on the right side, not far from the radiator.

The principle of operation of the adsorber on the VAZ-2114

To begin with, you should understand what adsorption is. So, this is a kind of process due to which the absorption of liquid and solid gaseous substances is carried out. A striking example of this can be the world's first gas masks, where activated carbon acted as an adsorber. In a VAZ-2114 car, about the same device acts as an adsorber, only its design has become much more complicated. An automobile adsorber today is a plastic case, inside of which there is a special filler capable of trapping gasoline vapors, thereby protecting the atmosphere from pollution. But this detail on the VAZ-2114 is not limited to this. The fact is that the adsorber also includes various valves and nozzles.

The adsorber does not have any effect on fuel consumption at all, since its main goal is to improve the environmental friendliness of the car. As the gas tank is emptied, fuel vapors rise up the neck, and then enter the separator. At this point, they again acquire a liquid state, as a result of which they return to the tank. Part of the vapors, which did not succeed in condensing, enters the above adsorber. The latter, by the way, is filled with the same Activated Carbon, designed to absorb harmful gases. It is quite remarkable that this process takes place when the engine is off.

The fact is that during the operation of the engine, the adsorber is constantly blown through due to a special valve, which means that absolutely all gases are burned in the exhaust system. It follows that the main purpose of the adsorber is to neutralize gasoline vapors.

Possible damage to the adsorber

There are only two reasons for a clogged adsorber valve:

  1. Low quality gasoline.
  2. Particles of adsorber filler clogging the valve.

By the way, there is another option for diagnosing a malfunction of the adsorber. If it is significantly clogged, but the gas tank cap is still in place, then from time to time in the cabin you can hear a persistent smell of gasoline, which appears and disappears by itself.

Features of removing the adsorber

If you nevertheless decided to completely remove the adsorber, you will need:

  • replace the gas tank plug with a leaky one;
  • replace the firmware of the electrical control unit;
  • plug the outlet and supply pipes.


As mentioned earlier, before removing the adsorber, you should think about the advisability of such an act, since there are no extra parts in the car. But even if you made the decision to remove it, this process should be taken seriously. First of all, you need to take care of the ventilation of the gas tank, which is simply necessary in the absence of an adsorber. Those car owners who convert a carburetor engine to an injection engine have an undeniable advantage. If they do not touch the tank nozzles, then they will not be able to break the carburetor ventilation system. In this situation, there is no need for an adsorber in such cars.

In the case of a VAZ-2114 car with an injection engine, everything is much more complicated. However, it is also not necessary to remove the adsorber. It should be noted that the only positive moment in the presence of an adsorber is the reduction in the amount of harmful emissions into the atmosphere of our planet. The indisputable "disadvantages" of this part include the rather high cost, as well as too much space occupied by the adsorber under the hood. It is the last two facts that, as a rule, become the reason for the decision to remove it.

But most often, motorists remove the adsorber after it has failed. Its cost is so great that the owners of the car come to the conclusion that they do not really care about the state of the Earth's atmosphere. Moreover, it is quite easy to remove this part. For this, it is necessary to put a fine filter on the separator hose. Now all gasoline vapors will go directly to the atmosphere. In this case, the hose from the valve does not need to be blocked. But if Check Engine interferes with you, then you should correct the ECU control program so that this light stops glowing on the dashboard.

According to the Euro-3 Euro-3 environmental standard, the emission of hydrocarbon vapors into the atmosphere, which arise from the evaporation of gasoline, is prohibited. With this in mind, scientists have come up with a device that allows you to capture and neutralize the above vapors.

This "saving" device has become the so-called adsorber, or as some call it - "absorber" (from the word absorbent - capable of absorbing, from a part, this name can also be considered correct), it is installed in the fuel system of a car in order to eliminate harmful vapors that occur as a result of the evaporation of gasoline.

Today, we will try to answer the most popular questions related to the adsorber, so that you know what it is, what it is for and how the fuel system adsorber works... As an example, we will take the VAZ 2110.

As an absorbent that absorbs hydrocarbon vapors, coal is used to fill the adsorber reservoir. Where do pairs come from? The vapors, as mentioned above, release gasoline due to heating of the fuel and constant agitation during the movement of the vapor, rise upward, then, through the hole in the neck of the tank, enter the separator. In the separator, the vapors condense and flow back into the tank, and some of the gases that did not have time to go from a gaseous state to a liquid state, or simply become condensate, enters the gravity valve and directly into the adsorber through the steam line, which it neutralizes with the help of activated carbon. This process occurs at a time when the motor is not working.

If the engine is running, the control system, by opening the solenoid valve, purges the adsorber, after which harmful vapors, together with air, are thrown into the intake pipe, where they are burned.

The benefits of such a system are twofold, since, first of all, there is no pollution of the atmosphere with harmful vapors, in addition, there is fuel economy, since gasoline does not evaporate, but returns through the separator to the tank.

What does the VAZ 2110 adsorber consist of?

  • Steam exhaust pipes and hoses;
  • Gasoline drain pipe;
  • Purge valve;
  • Separator;
  • Gravity valve;
  • Adsorber (activated carbon).

Common fuel system adsorber malfunctions

Like any filter, and the adsorber can be called a filter, the filter element becomes dirty over time, after which the performance of this device decreases.

Signs of a malfunctioning adsorber:

  • Excessive pressure in the fuel tank. This is due to the fact that gasoline vapors have nowhere to go and the tank is simply "bursting". A sign of excessive pressure in the tank is hissing when unscrewing the filler cap of the tank.
  • Engine idle may start to float.
  • Where is the adsorber located on the VAZ 2110?

    In order to find the adsorber, you need to raise the hood, and look into the left near corner, there you will see a small black cylindrical jar.

    Replacing the adsorber VAZ 2110- the procedure is simple, it consists in buying a new adsorber, removing the old one and connecting all the hoses in accordance with the way they were connected.

    That's all for me, the article about the adsorber has come to an end, who liked it, comment and share the article on social networks using the special buttons at the bottom of the article. Thank you for your attention, until we meet again at the VAZ Repair.

    All modern cars with automatic fuel injection, including Lada Kalina, are equipped with a gasoline vapor recovery system (EVAP). This is a mandatory requirement for cars whose environmental class starts from Euro-3. The system is designed primarily to exclude the ingress of fuel vapors into the atmosphere, but in addition, it allows you to maintain stable engine operation, as well as save fuel.

    One of the main components of the EVAP is the adsorber purge valve. What this element is, how it is arranged and what it is intended for, we will talk in this article. In addition, we will consider the signs of valve malfunction, the reasons for failure, and also describe the process of replacing it using the example of the Lada Kalina car.

    Why do you need a fuel vapor recovery system

    Gasoline belongs to the category of volatile hydrocarbons, and its vapors are highly volatile. While the engine is running, the gasoline in the tank heats up at least a little. In addition, while moving, he sways. These processes accelerate the evaporation of the fuel, creating an increased pressure in the container. Previously, car tanks had only a primitive ventilation system that simply released vapors through special vents into the atmosphere. Naturally, this did some harm to the environment, and there was no talk of fuel economy at all.

    The introduction of a gasoline vapor recovery system made it possible to solve both of these problems at the same time. With it, the fumes are not thrown into the environment in vain, but are used for their intended purpose, i.e. to ensure the operation of the engine.

    What the vapor recovery system consists of

    The security management system at Kalina consists of the following elements:

    • bypass and return fuel lines;
    • separator;
    • adsorber;
    • canister purge valve.

    As you can see, the system is quite simple. Let's consider the purpose of each of its elements separately.

    As for the fuel lines, they are simply pipes through which gasoline fumes leave the tank, as well as through which the fuel returns to it. The separator is used to collect fuel vapors and condense them. The adsorber is designed to capture those vapors that did not have time to turn into a liquid state. Adsorber purge valve ("Kalina") is necessary in order to direct gasoline vapors into the intake manifold receiver.

    How the system works

    Fuel vapors rise and concentrate at the top of the tank. When the pressure in the container rises, the vapors enter the fuel line, and from there into the separator. The process of their cooling and condensation takes place there. Part of the vapors settles on the walls of the separator, turns back into a liquid state and returns back to the tank through the return fuel line. The other part, which did not have time to condense, enters the adsorber. The device is an ordinary plastic can filled with crushed activated carbon. Vapors accumulate in the adsorber before starting the engine.

    When we try to start the engine, the purge of the adsorber ("Kalina") comes into play. The signal to open it is supplied from the electronic engine control unit. At the moment of start-up, the valve opens, and gasoline vapors are supplied through the pipeline to the receiver of the intake manifold. Thus, fumes, which no one even took into account before, contributes to fuel economy, and also does not pollute the environment.

    What is the purge valve of the adsorber on "Kalina"

    In fact, the adsorber purge valve ("Kalina") is a conventional shut-off device, actuated by a conventional electromagnet. It consists of:

    • plastic case;
    • electrical connector;
    • spring loaded valve;
    • electromagnetic winding;
    • magnetic core.

    Valve operating phases

    With the engine off adsorber purge valve ("Kalina") de-energized and in the closed position. In other words, the vapor recovery system is closed off from the side of the power unit. At this time, gasoline vapors are concentrated in the adsorber under pressure. At the moment the engine is started, the electronic control unit supplies power to the valve, activating an electromagnet. It opens the shut-off device, and gasoline vapors are naturally drawn into. When the engine stops working, the valve is de-energized and shuts off the pipeline. Gasoline vapors cease to flow into the receiver. This is how it works adsorber purge valve ("Kalina").

    Some modern foreign-made cars are equipped with more sophisticated devices. Their design is supplemented with sensors that allow the electronic unit to additionally receive information about the saturation of the adsorber fuel vapor, estimate the percentage of air and, based on the data, control the fuel supply to the injector.

    Symptoms of a malfunctioning adsorber purge valve

    Adsorber purge valve ("Lada Kalina") like any other electromechanical part, it can fail. Signs of its malfunction are:

    • the appearance on the dashboard of the inscription CHECK (during testing, an error with the code P0441 is determined, corresponding to a malfunction of the gasoline vapor recovery system);
    • floating engine idle speed;
    • unstable engine operation while driving;
    • increased fuel consumption;
    • an increase in the level of CO 2 in the exhaust gases.

    In addition, in Lada Kalina cars, a malfunction of the adsorber purge valve may manifest itself in the appearance of a characteristic smell of gasoline in the passenger compartment. This phenomenon occurs when the pressure in the vapor recovery system exceeds the design value.

    It is not difficult to diagnose the valve, but you need to know where to look for it.

    Adsorber purge valve ("Kalina"): where it is located and how to recognize it

    Unlike the injection vehicles of the Samara family, the Kalina's adsorber is located not in the engine compartment, but next to the gas tank. It is impossible to get to it without removing the fuel tank. But the purge valve is located under the hood. It is fixed to the radiator frame and is always freely accessible. You can easily find it, recognizing by the two pipes, through which, in fact, gasoline vapors move.

    Valve check

    Suspecting that the device is out of order, hurry up to diagnose it and replace it if necessary. No, its failure does not have critical consequences. The car drove and will continue to drive, just the engine will work in emergency mode, and it will consume more fuel. But how to check the adsorber purge valve on Kalina on your own?

    This process will not take long. And all that is needed from the tools is a multimeter, a screwdriver and a pair of wires. We raise the hood, we find the valve. Next, we disconnect the wiring harness from it. To do this, we squeeze out the pad fastening latch. The first step is to check if voltage is applied to the valve. Turn on the multimeter in voltmeter mode. We connect its black probe to the "mass" of the car, and the red one - to the connector "A" on the block of the wiring harness. We turn on the ignition and look at the readings of the device. The voltage at the terminals must match the voltage of the battery. If there is none at all, or it is much less, the problem is not in the valve, but much deeper.

    If everything is in order with the tension, let's move on. We dismantle the purge valve. To do this, use a screwdriver to loosen the fasteners of the hose clamps and remove them from the fittings. We move the valve up the bracket and remove it.

    Testing the device consists in connecting it directly to the battery terminals. We take one wire and connect it to the positive terminal of the purge valve. We connect the second wire to the negative one and throw both conductors to the corresponding battery terminals. At this moment, a click should be heard, indicating that the electromagnet has worked. In this case, the adsorber purge valve can be considered operational. If nothing happened when connecting, the device will have to be changed.

    Change the purge valve

    Trying to repair a valve is a thankless task. Yes, and it is inexpensive. Depending on the modification, the price for it can range from 350 to 600 rubles.

    Replacing the purge valve of the adsorber on "Kalina" after checking and dismantling it, it is carried out using one tool - a screwdriver with a Phillips bit.

    The order of installation of the device is as follows. First of all, we connect the gasoline vapor supply hoses to the valve fittings. Use a screwdriver to tighten the clamp fastening screws. We install the valve on the bracket and slide it down along the guides until it stops. We connect the wiring harness. We turn on the ignition, start the engine. If its performance has improved markedly, the revs have become stable, and the error message has disappeared from the dashboard, then we did everything right.

    Recently, more and more new devices have appeared in cars and the absorber is one of them. To comply with the Euro-3 environmental standard, all vehicles are required to have equipment that prevents hazardous substances that are formed as a result of fuel combustion from entering the atmosphere.

    The absorber is of the greatest importance in the recovery and processing of waste vapors in the machine. Its structure and basic principles of functioning should be known to every car owner.

    Types of absorbers used

    The topic of environmental protection is relevant for our country. Everyone should do it, especially the owners of cars with internal combustion engines. Tons of harmful substances emitted into the atmosphere annually do not make the world around us cleaner and better.

    To improve the environmental situation, an EVAP system is installed on each vehicle, the central place in which is assigned to the absorber. Classification according to the type of absorbent component.

    1. A stationary granular absorbent is used;

    2. A movable granular absorbent is used;

    3. A fine-grained absorbent is used, with a constantly boiling bottom layer.

    Most car manufacturers use devices with the first type of design, since it has been proven to be the most effective. Designs of the second and third types also capture spent fuel vapors.

    Their main disadvantage: the possibility of absorption of absorbent particles into the atmosphere with spent fuel vapors. Therefore, in order to maintain an efficient operating condition, the absorbent volume in the floating and boiling models requires regular checking. For this, the absorber must be dismantled.

    The device of the absorbing element of the car

    Externally, the absorber looks like a metal oblong can with two tubes. Through the first, the vapors to be processed are supplied inward, through the second condensate is discharged. Inside the main body, which has a cylindrical shape and is divided inside by a steel divider into two unequal parts, an absorbent and an evaporator are placed.

    The separator covers ¾ of the inner diameter, which allows the free flow of coolant through the cylinder. The absorber includes a generator and a condenser. To exclude their contact, they are separated by an inclined plate. The divider has one half - solid, the other - perforated.

    This design allows the absorbent to condense and return in the event of evaporation. This allows the volume of the absorbent to be maintained. The settling drops of refrigerant maintain a stable pressure. Subsequently, they burn out in the motor.

    Principles of functioning of absorbers

    Now let's take a look at how the absorber works on a car. The absorber is located above, the evaporator is below it. Due to the passage of the refrigerant through the pipes, the condensed liquid flows downward. After working, the cooler enters the evaporator tubes. Mixing with the absorbent solution, it enters the heat generator.

    When heated, the refrigerant separates. In the condenser, water and saturated absorbent are separated from the steam. The separated vapors enter the fuel tank.

    Due to the positioning of the absorber before the catalyst, the fuel vapors collected by it bypass the exhaust manifold and the catalyst. Thanks to this, the catalyst remains operational for a longer time. When the solenoid valve is opened in the absorber, air is blown through it. The vapors accumulated in it enter the engine for recycling.

    Characteristics of the working absorber

    Let us consider some of the characteristics that make it possible to judge the performance of the absorber.

    When not in operation, the pressure inside the housing must be equal to atmospheric pressure.

    To prevent carryover of the absorbent during the passage of the refrigerant, the absorbent liquid must have a stable consistency.

    To be able to control the flow rate of the refrigerant, it must have a constant temperature.

    Both liquids must be mutually soluble.

    A prerequisite is a high-quality mixture formation between the evaporator and the refrigerant.

    Both liquids used must be chemically stable and completely safe.

    Used absorbents and refrigerants

    In modern technology, two variants of the combination of evaporators and absorbents are used in absorbers. Firstly, ammonia can be used as a coolant, water acts as an absorbent. The second mixture uses water and lithium bromide. Both mixtures have approximately the same performance.

    Activated carbon is often used as a dry absorbent. The choice is reserved by the automaker.

    Thus, the absorber significantly reduces the emission of harmful substances into the atmosphere and allows little fuel savings.

    With the advent of cars that comply with the Euro 3 environmental standard, the car designers were faced with the task of creating a device that traps hydrocarbon vapors in order to prevent their penetration into the atmosphere. So in many cars, including domestic ones, an adsorber began to appear. What is it and how does this part work? Find out the answers to all these questions in our article.

    Where it is located?

    A part such as an adsorber is a small black jar several centimeters high. It is installed on almost all vehicles under the air intake on the right side of the engine compartment.

    Adsorption characteristic

    What is an adsorber for? In general, adsorption is the process of absorbing gases using liquid or solid bodies. In our case, the main element that "absorbs" vapors in the fuel system is coal. Part of this device is filled with it.

    Adsorber - what is it? Visual characteristic

    The very word "adsorber" translated from English means "amortize", "absorb". By its design, this part is an energy absorbing plate. Outwardly, you may not immediately determine that the bumper is not solid - inside it there is a special filler made of polymer materials.

    This part of the device (bumper) is considered the main one and converts mechanical energy into thermal energy, which is then dissipated in the external environment. A great responsibility is assigned to the plate, which is located in the adsorber, that is why many manufacturers impose such stringent requirements on its technical characteristics and the properties of the entire device as a whole.

    The main material that is used in the manufacture of this element is cellular plastic, or more recently, manufacturers have also begun to use glass beads. The quality of the material itself is also strictly controlled, since the health of many people depends on it. For this reason, the adsorber (you can see the photo of this device below) is equipped with only high-quality bumpers.

    But the safety and health of people depends not only on this. In order for the adsorber to perform its functions efficiently on a VAZ "Kalina" car, it is necessary to reduce the risk of damage to the rear bumper to zero. This part is a power element, and it is she who "holds the blow", which can provoke mechanical damage. And if the device is broken or punctured, it can no longer be allowed to operate. This is because with each blow the adsorber (the 2110th VAZ ’and including) loses its ability to absorb emissions.

    Adsorber - what is it? About construction

    This part consists of several structural elements:

    1. Front steam pipe.
    2. Multiple hoses.
    3. Purge valve.
    4. Vapor separator and fuel drain pipe.
    5. Gravity valve.
    6. Adsorber tubes and purge valves.
    7. Adsorber.

    Principle of operation

    The algorithm of action for the adsorber is as follows. The vapors that are formed in the tank, by their properties, rise up and, due to the lack of any container at the neck, first enter the separator. This is where the condensation process takes place. That is, the vapors turn into liquid again and are drained back into the tank. The part that did not have time to transform from a gaseous substance into a liquid one gets into the adsorber itself. Here, the system absorbs these surpluses with the help of activated carbon.

    It should be noted that this process occurs only when the engine is off. Otherwise, the system will open the canister purge solenoid valve to purge. In this case, all gasoline vapors that formed in the tank and did not have time to turn into a liquid state are blown out through the intake pipe of the internal combustion engine and burned.

    Thanks to this principle of operation, several advantages of using an adsorber can be noted at once:

    1. The atmosphere is not polluted by harmful vapors.
    2. The car will consume less fuel (albeit by less than 1 percent, but still the fact remains - without the burned out gasoline vapors, the engine would consume more fuel).

    Symptoms of a malfunctioning adsorber

    The property to clog up and become unusable is also inherent in such a part as an adsorber. Malfunctions of this device can occur not only due to a puncture, which has arisen due to mechanical damage, but also due to natural wear (contamination) of the absorbing element. A malfunction of this part may be in the tank. This happens due to the accumulation of a large amount of vapors that have nowhere to go from the system. It is quite simple to check the car for the presence of these formations - you just need to open the gas tank cap and listen to it. If you hear a characteristic hiss, it means that a lot of harmful atmosphere vapors have accumulated in the container.

    You can find out the malfunction in another way. For example, after the engine warms up to a temperature of more than 60 degrees Celsius, the idle speed of the car begins to drop significantly. In motion, the car can suddenly stall for no apparent reason.

    If similar symptoms are observed with your car, be sure to check the adsorber. You can do this - disconnect the hose that goes from the valve to the manifold, and drown it for several days. If the symptoms have not disappeared, and the car is still giving out "twists" with revolutions, then, most likely, the adsorber is clogged.

    Of course, with a clogged device, the car will drive as before, but it will have a "floating" idle. However, it is worth noting that if this problem is not eliminated in time, or at least the formation data is not periodically released from the container, then at refueling the tank lid will simply "shoot" from the neck, and may not even open. And where it will go, no one can predict. In any case, every time you approach the lid, it is simply unreasonable to fear for its unauthorized "shot" - the easiest way is to change this part for a new one, especially since it is not so expensive.

    How can an adsorber be replaced?

    You can change this part at the service center or on your own. But since the scope of work here is not too large and complicated (in total you will spend 15-20 minutes of time to replace the adsorber), it is quite possible to install this device with your own hands. Below we will tell you in more detail how to replace this element at home.

    Cooking tools

    First, we need to prepare a new adsorber, about 100 centimeters of a rubber hose for it, several clamps, engravers and bolts. It is worth noting that the hose must necessarily have oil and gasoline resistance and be equipped with such a part as an adsorber purge valve.

    Getting Started

    Let's start by dismantling the part.

    First, you need to free it from the fasteners, then disconnect from it the hose that supplies gasoline vapors to the throttle and the wires with the block. Next, the purge valve is dismantled. The fuel outlet hose from the separator is also disconnected. Unscrew and remove the bracket. This is not difficult to do, since it is attached with only three bolts.

    Installation

    At this stage, the adsorber has been successfully dismantled. Now you can start installing your new device. The longest piece of rubber hose connects to the pipe that supplies fuel vapor to the purge duct. The part of the hose that is smaller is connected to the intake pipe from the separator. After that, we put it on the mounts. Now we connect the vapor supply hose to the purge channel. The latter is installed on the motor cover. A block with wires is also connected here. A long hose must be installed between the purge valve and the canister. Recall that all rubber tubes must be resistant to engine oil and gasoline. The old hose with check valve tube is removed. A short section of the part is installed in its place. That's it, at this stage the adsorber has been successfully installed. As you can see, the installation of this device can be done without the help of specialists.

    Finally, we note that many car owners install adsorbers from a younger model - "Priora" on VAZs of the tenth family.

    Diy valve diagnostics

    If you only need to replace the adsorber valve, then even more so it makes no sense for you to go to the service station. Unlike installation, this job will require a few minutes of your time and only one Phillips screwdriver. It is not difficult to find such a device, and it costs only 500-600 rubles. Well, everyone has a Phillips screwdriver in the house. Along with the valve, the adsorber sensor can also be changed, since it directly controls the first part. However, this should be done only when the sensor emits extraneous sounds in the form of crackling.

    First, we will diagnose the valve for serviceability. To check this part, we need a multimeter and several pieces of wires.

    First, release the retainer and remove the wiring harness block from the purge valve. Then we connect the negative probe of the voltmeter to the "mass". After turning on the ignition, we measure the voltage at terminal "A" of the wiring block.

    The result should be at least 12 volts. If there is no voltage, or it is less than normal, most likely your battery is discharged or the computer is faulty.

    Using a Phillips screwdriver, loosen the clamp securing the tube to the valve. We take out the hose from the pipe. Prying off with a screwdriver, remove the valve from the adsorber. We apply 12 V voltage from the battery to the terminals (plus to terminal "A", minus to "B").

    If the valve after this does not open with a characteristic click, the device must be replaced. By the way, if the O-ring is missing on the new element, it can be borrowed from the old part. However, this is permissible only if the ring is free from mechanical damage and microcracks. If this is not the case, the sealing part must also be replaced.

    How to change the valve?

    So let's get to work. First you need to de-energize the car, that is, remove the negative terminal from the battery. Next, disconnect the plug from the KPA.

    To do this, in order to get to this part, we slightly release the clamp of the inlet pipe. Removing it from the side. Now, in order not to remove the mass air flow sensor itself, we slightly bend the valve mount for its unhindered dismantling. The retraction of the attachment is approximately 1 centimeter.

    After that, you need to pull it up along the grooves. So this part is removed very easily. But on this, the adsorber valve has not yet been dismantled. Next, we will need to disconnect several inlet fittings on each side. One of them is easy to extract, while the other can be problematic. The fact is that the inlet fitting is fixed with a special latch. To remove it, you need to drown the retainer and pry off the plastic antennae (while the fitting rises slightly).

    At this stage, the adsorber valve has been successfully dismantled. Installing a new one is carried out in the reverse order.

    Conclusion

    Adsorber - what is this device? In this article, you found out how important this element is for a car, as well as what structural elements it consists of. The adsorber is designed in such a way that it communicates directly with the catalyst. And while the car is warming up, it collects gasoline vapors in the fuel tank so that they do not penetrate into (the penetration of vapors into the cold catalyst of the car is undesirable). And if you are wondering whether a car needs an adsorber or not, we will answer you the following: if you do not have a catalyst, then without this device you can safely continue driving (of course, provided that you do not think about ecology and environmental standards of technical inspection).

    So, we found out what the VAZ adsorber is for and how to replace it. Remember that this part is of great importance for passenger cars with an environmental standard "Euro 3" and above. In the absence of this element, the concentration of harmful vapors will be significantly increased, respectively, the car will reduce its level of environmental friendliness from "Euro 3" to "Euro 1" or 2.