How to remove an air lock on a Priora

July 27, 2020 Lada.Online 282 002 29
Have you noticed that the heater in your car is blowing cold air? There may be several reasons for the problem, but most often this occurs due to the formation of an air lock in the engine cooling system. Next, we will tell you how to remove air from the cooling system of Lada cars (Granta, Kalina, Priora, Largus, Niva, Vesta or XRAY) in several ways.

Let us remind you that AVTOVAZ installs the same type of power units on its models, so the instructions are similar for all Lada cars.

An air lock forms in the engine cooling system.

It would seem that the formation of an air lock in the cooling system of an internal combustion engine is such a simple problem, but its presence seriously affects the current and future operation of the engine. Many drivers have encountered such phenomena as boiling antifreeze, antifreeze and water, failure of various sensors, seething - all this indicates that there is air in the system channels, which is stopping circulation. It also happens that after starting the engine the car does not heat up. When the first signs of air appear in the engine cooling system, prompt elimination of the causes is required.

How to expel air, method No. 2

Warm up the engine until pressure builds up in the engine cooling system.
Stop the engine and remove the hose from the throttle body heating. We do not open the expansion tank cap.
As soon as antifreeze runs out of the hose, quickly put it back on and tighten it with a clamp.

Attention! Antifreeze can be very hot, be careful.

Signs of an air lock in the cooling system

You can determine the presence of air in the engine refrigeration system by conducting independent diagnostics and eliminating the causes. We carry out diagnostics based on the above criteria.

Checking the system for leaks. Over time, clamps weaken, oxidize, or break completely. The hose also has shock absorption; over time, it bursts and cracks; either heat or cold gradually destroy the rubber.
Problems with the thermostat. If the engine heats up very quickly after starting, that is, the cooling fan has already turned on, and the temperature sensor shows that it is about to push the needle into the red scale, then this indicates a non-working thermostat or the presence of air in the pump discharge pipe. In this case, the thermostat valve will be in the closed position, the coolant will move in a small circle. The opposite may also happen. The engine takes a very long time to warm up after starting. This means that the thermostat valve is fully open or there is an air lock in the thermostat. In all cases, you will have to remove air from the engine cooling system.

It’s easy to check the thermostat yourself; you need to do the following:

start the engine;
after a couple of minutes, touch the radiator pipes (the top one should be warm first, then cold, the bottom one should be cold);
when the engine temperature reaches operating temperature, 80-90 degrees, the thermostat should open and the lower pipe should heat up.

It's also easy to check functionality. It is determined by the noise level (it is not worth using a noise sensor and determining the level in decibels (dB)), by the sound you can already feel how the pump is working. The vibration of the pump is also checked. The pump bearing may have fallen off.

The main clue is that air has appeared in the engine cooling system in the heater. If the engine is hot and the heater is blowing cold air, then there is an air lock.

Air has entered the engine cooling system: the main signs of airing

For a better understanding, let's start with the general operating principles. While the engine is cold, the liquid circulates only through the cooling jacket (special channels in the cylinder block and cylinder head), without entering the radiator. Circulation is provided by a water pump.

After the coolant temperature reaches a certain value, the thermostat is activated, which opens a large circle (the liquid passes through the radiator). If cooling the coolant when driving in a large circle is not enough, then the engine cooling fan (air cooling) is automatically switched on.

Please note that these malfunctions can occur for various reasons, that is, the engine begins to overheat not only due to air locks, but this possibility should also not be excluded.

As with any closed fluid system, air pockets can cause the system to stop operating normally. In this case, the risk of engine overheating also increases significantly, and the stove stops working normally.

The main sign of air lock formation is engine overheating. In other words, the temperature rises above normal, the temperature gauge may rise to the red zone. In this case, when checking the coolant level in the expansion tank, no deviations may be detected.
Also, during the cold season, the driver may notice that practically no warm air enters the cabin, although the engine is normally warmed up. This also indicates that there may be air in the cooling system.

One way or another, the air lock does not allow coolant to circulate normally through the channels of the cooling system. As a result of impaired circulation, certain problems arise. As part of diagnosing the engine cooling system, you should check the coolant level in the expansion tank, and also carefully inspect individual areas of the system.

We also note that air can enter through subtle cracks in the rubber pipes, but there may not be intense leaks through these cracks. Usually such cracks are not immediately visible, but a detailed inspection or injection of air into the system under pressure for testing can reveal problem areas. Also, during the check, you should pay attention to the pump, check the operation of the thermostat and cooling fan.

If everything is normal, then there is a high probability that the stove is not working and the motor is overheating precisely because of air locks. In this case, it is necessary to take measures and “drive” such a plug from the cooling system.

Reasons why air appears in the cooling system

Air appears in the system due to malfunctions, actions or inactions on the part of the driver. The following reasons are identified:

The tightness of the system is broken. This could be a loose clamp, fitting, or cracks in the hoses.
Work has been carried out to replace or top up the coolant. This is, as a rule, the most common reason for air getting in, because not everyone knows that it should be poured in a thin stream. If you pour in a thick stream, a funnel is formed that swirls the air.
The air valve is out of working order. This valve is located in the coolant reservoir cap. During natural heating or by installing and starting an autonomous engine preheater, the volume of liquid increases, the pressure in the tank increases and excess air must be discharged through the valve in the lid. This is also a common reason. This is the first place to look for the reasons for airing in the cooling channels. This cover costs 100 rubles for modern VAZ cars. Whoever changes it, when he has already double-checked all the reasons, even after replacing the cylinder head, it turned out that the reason was precisely the non-working cover.
Problems with the pump (pump). The seals and fibers in the pump may be faulty, causing air leaks.
There is a leak through a bolt in the cooling radiator (not available on all models). If there is a leak of antifreeze, antifreeze or water, the lost volume is filled with air.
Burnt cylinder head gasket. If the engine has already been overheated, then there is a possibility that the cylinder head gasket has burned out. When it burns, coolant is released either into the crankcase or into the exhaust system. Seething and boiling begins when the volume of coolant (coolant) has decreased and the entire void is filled with air. In this case, repairs and replacement of the head gasket will be required; for this you need to know what types of cylinder head gaskets there are.

If coolant gets into the engine crankcase, it is easy to check with the oil level dipstick; the level will be higher than expected. If water is used as coolant, the engine oil will turn white. Sometimes air gets into the brake system, in which case the system also needs to bleed air. And for this you need to know the diagram, which wheel to start with and what exactly to do to bleed brakes with ABS and how to bleed brakes without ABS. If the entire fuel fluid has leaked or you want to replace it, then such work also has its own nuances. In particular, you need to know which brake fluids can be mixed and how much brake fluid is needed for replacement.

Signs of air in the engine cooling system

One of the most noticeable signs of incorrect operation of the cooling system is the unstable functioning of the interior heating stove. This is noticeable in the cold season: in this case the engine is normally warmed up, but the interior heating circuit does not work - no heat flows inside. Usually, along with this, the coolant temperature indicators “jump” and it may boil.
The main symptom is excessively high engine temperature. In this case, the coolant level in the expansion tank may be within normal limits.
The main causes of air in the cooling system
There are 3 main types of reasons for unstable engine cooling: mechanical damage, violations during vehicle maintenance, and wear of parts. Among the most common ones auto mechanics call:
Loss of seal in the cooling system. This may include damage to hoses, pipes, pipes and similar elements. The cause of depressurization can be either wear of parts or mechanical damage.
Coolant leak. This is the same depressurization, but in this case it is easier to find the location of the breakdown - drips are visible on the problem parts.
Violations of the rules when filling antifreeze. Inexperienced drivers often fill it with a wide stream, which causes air to enter the system. It must be filled in such a way that the air has time to leave the container. That is, the thickness of the jet should be less than the diameter of the neck.
Damage to the air valve, which prevents unnecessary air from entering the system and removes it from the system. A faulty valve sucks in outside air, which enters the cooling jacket of the internal combustion engine. In this case, replacing the cover with the air valve or repairing it will help.
Pump failure. A worn or defective pump, like an air valve, allows air into the system, disrupting its operation. Often the problem areas of the pump are the fiber or the seal. If the pump does not work correctly, it should be replaced.
Broken cylinder head gasket. In this case, antifreeze may enter the engine cylinders. The main symptom in this case is white smoke from the exhaust pipe.

How to remove air from the engine cooling system.

The process of removing an air lock on cars is almost the same, be it Kalina, Priora, Granta, Hray, Vesta, VAZ 211(0-5), 2101-2107, Opel, Daewoo Matiz, Nexia, Nissan Almera, Gazelle Business, Audi 80-100 , BMW E39, Peugeot, Chevrolet Cruze, Skoda, Mazda, Mitsubishi Lancer, Suzuki Grand Vitara, Niva, UAZ, Volkswagen, Ford, Renault Duster, on Chinese Lifan and even on premium class cars.

There are several options for removing an air lock from the cooling system:

Option #1:

Remove the plastic casing from the internal combustion engine. Why do you need to unscrew the filler cap to fill the oil? Remove the trim. After removing the casing, you need to close the neck to avoid the ingress of various kinds of objects.
Find the pipes that provide heating for the throttle assembly.
Remove any one pipe.
Unscrew the cap of the expansion tank.
Cover the neck with a clean piece of rag or tightly connect the hose and blow into it.

Thanks to this method, air and the general system are bleed. You need to blow until liquid flows out of the disconnected pipe. Then, immediately put the hose back in place.

Option #2:

Start the engine and let it run for about 15 minutes.
Turn off the engine.
Disconnect any pipe on the throttle assembly.
We do not touch the tank lid; it must be closed.
Wait until the coolant starts to flow out.
Place the pipe in place and tighten it tightly with a clamp.

To use this option, it is advisable to wear thick rubber gloves and overalls, because the temperature of the liquid is about 90 degrees.

Option #3:

Place the car on a steep incline with the front end facing up (the steeper the better).
Set the handbrake.
Place wheel chocks (chocks) under the wheels.
Unscrew the plugs from the expansion tank and the cooling radiator.
The car should run for about 15 minutes with this setting.
The antifreeze will gradually descend into the system, and the air will escape.
Add antifreeze and gas.
When the bubbles end, all the air has escaped.

How to expel air, method No. 1

Remove the hose from the throttle body heating.
Open the cap of the expansion tank, cover the neck with a clean rag and blow into the tank.
When antifreeze starts flowing from the removed tube, quickly put the hose back in place and tighten it with a clamp.

Attention! Coolant is a toxic substance, so we recommend that you use other methods to solve the problem.

Protection against air lock formation in the cooling system.

In all matters related to malfunctions and subsequent repairs, the easiest way is to prevent the occurrence of breakdowns; in this case, it is necessary to prevent the appearance of an air lock. It is advisable to learn how to fix simple breakdowns and perform preventive maintenance yourself, then you won’t have to contact a car service center.

One of the main preventive measures for the formation of an air lock is not to bring the coolant to a boil (do not overheat the engine). If antifreeze is poured in, it can withstand higher temperatures than antifreeze, and even more so than water. When the coolant boils, steam is formed, which is pressed into the most inaccessible corners of the ignition system. In such cases, certain types of breakdowns appear.

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The presence of air in the cooling system is fraught with problems for both the engine and other components of the car. In particular, overheating may occur or the stove will heat poorly. Therefore, it is useful for any motorist to know how to remove an air lock from the cooling system. This procedure is quite trivial, so even a beginner and inexperienced car enthusiast can do it. Due to its importance, we will talk about three methods of removing air. But first, let's talk about how to understand that air jams are occurring and the reasons for their occurrence.

Symptoms of airiness

How can you tell if there is an air lock in the cooling system? When this phenomenon occurs, several typical symptoms occur. Among them:

Problems with the thermostat . More specifically, if after starting the engine the cooling fan turns on very quickly, then there is a high probability that the thermostat has failed. Another reason for this may be that air has accumulated in the pump nozzle. If the thermostat valve is closed, the antifreeze circulates in a small circle. Another situation is possible when the coolant temperature needle is at “zero” when the engine has already warmed up enough. Here again, two options are possible - a malfunction of the thermostat, or the presence of an air lock in it.
Antifreeze leak . It can be checked visually by traces of antifreeze on individual elements of the engine or chassis of the car.
The pump starts to make noise . When it partially fails, extraneous noise appears.
Problems with the stove . There are many reasons for this malfunction, but one of them is the formation of an air lock in the cooling system.

If you find at least one of the symptoms described above, then you need to diagnose the cooling system. However, before doing this, it will be useful to understand what caused the possible problems.

Causes of air locks

Air in the cooling system can be caused by a number of malfunctions. Among them:

Depressurization of the system

You need to pour antifreeze in a thin stream.

Each of the reasons described above can damage the components and mechanisms of the car. First of all the engine suffers because its normal cooling is disrupted. It overheats, causing wear to become critical. And this can lead to deformation of its individual parts, failure of sealing elements, and in especially dangerous cases, even to jamming.

Airing also leads to poor stove performance. The reasons for this are similar. Antifreeze does not circulate well and does not tolerate sufficient heat.

Next, let's move directly to the methods by which you can remove the air lock from the cooling system. They differ in the method of execution, as well as complexity.

Methods for removing air lock from the cooling system

How to remove an air lock from the cooling system of a VAZ classic

There are three main methods by which you can eliminate an air lock. Let's list them in order. The first method is great for VAZ cars . Its algorithm will be as follows:

Remove from the engine all protective and other elements that may prevent you from reaching the expansion tank with coolant.
Disconnect one of the pipes that are responsible for heating the throttle assembly (it doesn’t matter whether it’s direct or reverse).
Remove the expansion tank cap and cover the neck with a loose cloth.
Blow inside the tank. This will create a slight excess pressure, which will be enough for excess air to escape through the pipe.
As soon as antifreeze comes out of the hole for the pipe, immediately put the pipe on it and preferably secure it with a clamp. Otherwise, air will get back into it.
Close the expansion tank cap and reassemble all previously removed engine protection elements.

The second method is carried out in accordance with the following algorithm:

Start the engine and let it run for 10.15 minutes, then turn it off.
Remove the necessary elements in order to get to the expansion tank with coolant.
Without removing the lid from it, disconnect one of the pipes on the tank. If the system has been aired, then air will begin to escape from it.
As soon as the antifreeze flows out, immediately replace the pipe and secure it.

The third method of how to remove an air lock from the system must be done as follows:

It is necessary to place the car on a hill so that its front part is higher. It is important that the radiator cap is higher than the rest of the cooling system. At the same time, put the car on the handbrake, or better yet, put chocks under the wheels .
Let the engine run for 10.15 minutes.
Unscrew the caps from the expansion tank and radiator.
Periodically press the accelerator pedal and add coolant to the radiator. This will cause air to escape from the system. You will notice it by the bubbles. Continue the procedure until all the air is released. In this case, you can turn on the stove to maximum mode. As soon as the thermostat opens the valve completely and very hot air enters the cabin, it means that the air has been removed from the system. At the same time, you need to check for bubbles coming out of the coolant.

As for the last method, on machines with an automatically turned on cooling system fan, you don’t even have to over-gas, but calmly let the engine warm up and wait until the fan turns on. At the same time, the movement of the coolant will increase, and under the influence of circulation, air will leave the system. In this case, it is important to add coolant to the system in order to prevent airing again.

As you can see, the methods of how to get rid of an air lock in the engine cooling system are quite simple. They are all based on the fact that air is lighter than liquid. Therefore, it is necessary to create conditions under which the air lock will be forced out of the system under pressure. However, it is best not to bring the system to that state and take preventive measures in a timely manner. We will talk about them further.

How to remove a plug in the cooling system on a VAZ 2170-VAZ 2172?

1. There are only a few ways, each of which we will consider today, firstly, the very first method is very simple and does not require a lot of effort, you will need to find at the beginning any climb or slide and after finding it, drive up it and putting the car in neutral gear (the front should be higher than the rear), after standing for two minutes, let it idle and turn on the heater, make sure that the plug is removed from the system, otherwise let the car sit the same time, but apply gas at the same time, this way the traffic jam will most likely be removed.

2. The second is also an effective method and it consists of the following: you need to unscrew the cap of the expansion tank (Indicated by the arrow in the photo below) when the car is not warmed up (it will still be cold, to put it simply), then get into the car and start its engine , let the car run for three, four or even five minutes (If necessary), then turn it off and turn on the heater, thereby making sure whether the air lock has left the system or not.

3. Well, the last way is to press all the thick hoses of the cooling system with your hand, there are four hoses in total, as you can see in the diagram just below (these hoses are indicated by numbers 4, 10, 13 and 18), so these are all the hoses that are shown in the diagram and you need to press it, then start the engine and let it warm up, check the result, if one of the methods does not help you, then in this case drain the liquid and fill it (If it is new) again (If it is old, then change it to a new one) , but don’t forget to disconnect the hose from the throttle assembly fitting; by the way, you don’t have to drain the liquid, but at the beginning just try to disconnect the hose itself from the fitting (Which hose needs to be disconnected and from which fitting, read the article: “Replacing the coolant”, in everything is written in paragraph 1) and if liquid does not flow out of it, then feel free to open the cap of the expansion tank and add coolant to the reservoir until it flows out of the hose or until the MAX mark reaches (All this is done on a cold engine ).

Additional video: When air usually appears in the system, it accumulates in the upper part of the entire system, so pay special attention to it, but what of our cooling system is at the top of the engine? Answer: the throttle assembly and both hoses connected to it related to the cooling system, so pay special attention to them, just below as you can see there is a small long video, the car uses a completely different principle for removing air locks on Nivas and Priora is also different, but don’t pay much attention to it, and you won’t do it on a Priora in the same way as shown in the Niva example (Priora simply doesn’t have a radiator cap), so just take this video as a note and delve a little into the words which are said in it, thanks to this you will be able to understand how to remove the air lock on your car, because everything is explained in quite detail in the video.

General recommendations for prevention

The first thing you need to pay attention to is the level of antifreeze in the cooling system . Always monitor it and top up if necessary. Moreover, if you have to add coolant very often, then this is the first call indicating that something is wrong with the system, and additional diagnostics are necessary to identify the cause of the malfunction. Also check for stains from antifreeze leaks. It is better to do this in the inspection hole.

Try to use the antifreeze recommended by your car manufacturer. Make purchases in trusted, licensed stores, minimizing the likelihood of purchasing a counterfeit. The fact is that low-quality coolant can gradually evaporate during repeated heating, and instead of it, an air plug forms in the system. Therefore, do not neglect the manufacturer's requirements.

Instead of a conclusion

Finally, I would like to note that if the described signs of airing in the system appear, it is necessary to carry out diagnostics and check it as quickly as possible. After all, an air lock significantly reduces the efficiency of the cooling system. Because of this, the engine operates under conditions of increased wear, which can lead to premature failure. Therefore, if you detect airing, try to get rid of the plug as quickly as possible. Fortunately, even a novice car enthusiast can do this, since the procedure is simple and does not require the use of additional tools or devices.

How to expel air, method No. 3

With the engine cooled down, remove the upper hose from the expansion tank coming from the radiator of the cooling system.
Fill the reservoir to the maximum with coolant and tighten the cap.
We place the hose in an empty canister, and put a hose from the air pump (for inflating tires) on the tank nozzle.
We pump up the pressure in the tank with a pump, and at the same time the antifreeze will pour into the canister.
We monitor the level of coolant in the expansion tank and add it if necessary.
After 2-3 additions of liquid, we restore all connections.

How can you remove an air lock in the cooling system, solving the problem

The issue of engine overheating due to the appearance of air in the cooling system (air lock) worries many motorists. Taking this into account, we decided to help, so in our article today, we will talk, as you may have guessed, about how to remove an air lock from the engine cooling system. The topic is quite popular, since not a single car is immune from the appearance of an air lock. Before you find out how we will solve the problem, first a few words about where the air in the cooling system comes from, that is, how an air lock is formed.

How to remove an air lock

Hello again, dear readers. In previous posts we talked about how to change antifreeze and how to replace the heater tap. This article will be a very useful addition to the previous two, because not everyone knows how to remove an air lock from the engine cooling system and heating system.

Signs of an airlock. How is it dangerous?

An air lock in the engine cooling system and heater can cause you a lot of trouble. This is, firstly, uneven heating of the engine and its overheating due to insufficient cooling. Air in the cooling system prevents the circulation of coolant and, as a result, heat exchange between the engine and antifreeze does not occur. Also, due to the air lock, the coolant cannot pass into the radiator and therefore the engine begins to overheat.

The second problem when an air lock occurs is the stove (heater) not working. Antifreeze cannot pass into the heating radiator, so it remains cold and the passing air does not heat up. Both of these problems are usually interrelated and appear together, and therefore require immediate elimination.

Today I know several ways to remove an air lock in VAZ cars. They will be described below. Some of them can be used on foreign cars.

Methods for removing air lock from the system

Let's get straight to the main point of the article. There are three ways to remove an air lock. I consider them the main and most accessible. They are based on the fact that air is lighter than water and therefore collects at the highest point. From there we will delete it. Let me first make a reservation that when performing work, the heater valve must be fully open (to the hottest air). So, a description of the first method. It is suitable for cars that have the ability to disconnect the heating hose of the throttle assembly or carburetor (on most VAZ cars). Since the throttle assembly (carburetor) is the highest point in the engine cooling system, this place is the most suitable for removing air from the system. The procedure is as follows. First, remove all protective covers and other elements that prevent access. Then unscrew the heating hose clamp and remove the hose from the fitting. We unscrew the cap on the expansion tank and blow into it with our mouth until antifreeze flows out of the throttle assembly or pipe. As soon as liquid comes out of the fitting or hose, quickly put the hose back in place and screw everything back. These actions allow you to remove the airlock almost 100%. Let's move on to the second method.

How to remove an air lock by removing the heating pipes of the throttle assembly.

The second method is similar to the previous one, but does not require blowing into the tank. As in the previous version, remove all protections, warm up the engine to operating temperature, and turn off. Without unscrewing the expansion tank cap, remove the hose from the throttle body heating fitting. As soon as the coolant flows, put the hose in place and put everything back together.

If it doesn’t work the first time, put the hose in place, unscrew the tank cap, tighten it and repeat the operation. As a rule, you can remove the airlock using this method the first time. Don't forget about safety measures. The coolant has a temperature close to 90 degrees and is under pressure, so be careful and somehow protect your hands from burns (I wear two gloves: first cotton, and rubber on top). Let's move on to the third method.

Now I’ll tell you how to remove the air lock without disassembling the system. I’ll say right away that this method is less effective than the previous two, but it is simpler. Its essence is as follows. It is necessary to drive the car up a steep hill so that the top radiator cap becomes the highest point in the cooling system. We remove the cap of the expansion tank (if there is one, then the radiator), start the engine and warm it up to operating temperature. Antifreeze from the tank should begin to flow into the system; it must be added to the required level. To increase the fluid flow, you need to increase the engine speed. In this case, the antifreeze may suddenly disappear and you need to top it up immediately. We continue the operation until bubbles stop coming from the return line.

That's probably all I can say about how to remove an air lock from the cooling system. I can only add that a sign that the air lock has gone is hot air from the heater. If anyone knows other ways, I suggest writing them in the comments.

Removing an air lock from the cooling system of a VAZ 2114 car

The presence of malfunctions in the engine cooling system can cause many problems for the car owner. The most typical problem is the presence of an air lock in the system, due to which antifreeze does not enter the furnace and, as a result, the car interior is deprived of heated air, which is extremely necessary in the cold season. But the most important thing is that many parts and components of the engine begin to experience overheating, as a result of which the resource of the unit is significantly reduced.

Causes and symptoms of malfunction

The reasons for the formation of air jams may be of the following nature:

Thermal contraction of the material, due to which cracks are formed in the places where the pipes are attached, through which atmospheric air enters the system.
The valve installed on the expansion tank cap has failed.
The need to replace the cylinder head gasket due to its wear.
Presence of cracks in the cooling or heating radiator.
There are leaks in the pump (worn seals or another reason).
The presence of blockages in the pipes and radiator, mechanical damage to these parts.
The thermostat is partially not working.

How does the VAZ 2114 cooling system work and how does it work?

The engine cooling system of the VAZ 2114 car is of a closed type and consists of two circles (large and small), in which the liquid circulates forcibly - due to the pressure created by the pump. The second most important element of the system is the radiator, which consists of a large number of pipes, and a fan, due to which the liquid circulating in it is cooled.

Features of VAZ 2114 engine cooling

A special substance – antifreeze – is used as a coolant in the cooling system of this car. It circulates through the tubes while the engine is running and takes the required amount of heat to cool the components and parts of the unit. The pump drive, which ensures circulation of the working fluid in the system, is connected by a belt drive to the engine crankshaft. To regulate the direction of flow (in a small circle, bypassing the radiator, or in a large circle of the system), a thermostat is used. If the coolant temperature reaches 87 degrees Celsius, the thermostat directs it to the radiator for cooling.

Refinement of SOD from airing

Owners of LADA Kalina (1.6l, 8kl) cars are offering a simple modification that will solve the problem of constant airing of the engine cooling system. If the antifreeze leaves, then you should look for a leak. If the antifreeze stands still and an air lock appears periodically, you should extend the hose from the radiator so that its end is immersed in the coolant in the expansion tank:

If this modification does not help and airing of the cooling system occurs periodically, then the car’s cooling system is not sealed. Check the connections of all system hoses for leaks, as well as the expansion tank cap.

AIR IN THE ENGINE COOLING SYSTEM VAZ 2110 - Air locks in the car cooling system

The plug was removed because the throttle body is the highest point in the cooling system.
We will tell you how to remove air from the VAZ 2114 cooling system and forget about these problems. During operation of the VAZ 2114, the engine cooling system may begin to work incorrectly. There is another way to create the pressure in the cooling system necessary to remove the air lock - just start the engine for a short time. 1) First unscrew and thereby completely remove the cap that covers the cooling expansion tank. 1) First, slightly loosen the clamp of the coolant drain hose and then little by little try to disconnect it from the fitting. 2) Next, when the hose is disconnected, pour the liquid itself into the tank and at the same moment liquid should flow out of the hose that you hold in your hand.

2110 1999, the injector changed the radiator, pipes and antifreeze of the cooling system. Now I’m driving and the engine heats up very quickly, the fan operates at 95-100 degrees. But this approach often ends badly for the driver, because a malfunction can happen on the road.

And most faults can be easily fixed in a garage. For example, in the process of replacing antifreeze, some motorists experience excessive engine overheating.

How to remove the plug from the cooling system on a VAZ 2110-VAZ 2112?

You can tell that there is an air lock in the system by the cold air that is supplied by the heater to the vehicle interior even when the engine is well warmed up. Visual evidence of the presence of a plug in the system can also be the rapid heating of the motor, which ultimately leads over time to overheating of the latter. If this happens, the breakdown must be repaired quickly, because future repairs can be much more expensive.

It is advisable to install the vehicle on a flat surface to make it more convenient to work and to release air more effectively. It is necessary to turn off the engine, remove the cap from the expansion tank and lower the clamp of the water pipe into the container, through which antifreeze is supplied to the throttle assembly of the engine. In order to release air from the cooling system, it is necessary to slightly move the clamp. At the same time, a characteristic hiss of air should be heard.

After this, you need to return the pipe to its place and tighten the clamp well. While performing this work, you can at the same time check the entire system for leaks. Start the engine and warm it up to operating temperature.

If it starts working normally, the air is circulating and there are no air pockets in the system, then the air flow will also have a fairly high temperature. At the moment when the antifreeze boils over and rises, 200-400 grams flow out. 4 minutes 37 seconds but not like an airlock. It leads to engine malfunctions, seething, overheating of many car components, incorrect sensor readings, thermostat failure, poor interior heating, etc.

If there is air leakage at the joints of the pipes. And if their compression is insufficient, air gets into the micro-slits. Before you begin to identify air jams, it is necessary to exclude more serious causes of malfunction of the car’s cooling system.

If checking the cooling system does not reveal any mechanical faults, then you can safely proceed to eliminate the air lock. A plug can form on both the external and internal circuit. If the standard system from the manufacturer does not work (and this often happens), “folk” methods come to the rescue.

How CORRECT! remove air from the cooling system!

In older cars without an expansion tank, the highest point is the radiator. The car is placed on the overpass with its nose up and the engine is turned on. After some time, the air lock comes out. In modern cars with a closed system, simply lifting the front of the car is not enough. We still need to depressurize the system. For example, loosen the outlet pipe (until a small gap forms) on the heater radiator fitting and wait until antifreeze flows out without air bubbles.

Can be performed while traveling. Unscrew the screw on the radiator to bleed air. One person sits behind the wheel and periodically accelerates slightly (no more than 3500 rpm). It also monitors when hot air comes out of the stove.

How to remove an air lock from the Lada Kalina engine cooling system

It is strongly recommended to squeeze the lower pipe with your hands to completely squeeze out the accumulated air from the system. This indicates that the thermostat is fully opening." Actually, the heater radiator is a small circle of the cooling system and has nothing to do with the open thermostat. Do not mislead people.

Cooling system. Engine radiator

Please don’t start searching right away. I read it and didn’t fully understand how to do it correctly. There is also an opinion that air can accumulate in the gas reducer (the car runs on gas). It is installed slightly above the radiator and is looped with antifreeze for warming up. Several heating-cooling cycles - and the stove functions normally. The engine cooling system (ECS) of the VAZ tenth family is liquid, closed type, with forced circulation.

In the article: SOD schemes, the purpose of system elements and their operating parameters. The use of water in the cooling system is not recommended: hot water causes intense corrosion of aluminum parts. Replacing coolant, which coolant is better to choose.

If the pump fails, it is recommended to replace it as an assembly. Installation of an additional pump, and which pump is better to choose. The VAZ-2112 engine thermostat has an increased resistance of the bypass valve (throttle hole), due to which the fluid flow through the heater radiator increases. Modifications to the thermostat. To monitor the coolant temperature, a sensor is screwed into the engine cylinder head and is connected to a temperature gauge on the dashboard.

The heater heat exchanger is designed to heat the air entering the passenger compartment with the heat of the engine cooling liquid. It is connected by hoses to the engine cooling system. It is enough to unscrew it with the engine running, and if there is air in the system, it will begin to bubble. One of the reasons for this problem is air that gets into the cooling system.