Expansion tank of the engine cooling system VAZ 2115. Design features of the cooling system. Disadvantages of the basic cooling system
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The cooling system, in comparison with other systems of the car, requires the least attention. Maintenance of the cooling system comes down to periodic checks of the coolant level. It is also necessary to periodically inspect the engine for signs of coolant leaks and check the condition of the cooling system hoses and fan drive belts.
ATTENTION
The coolant level should only be checked when the engine is cold. If you remove the hermetic plug from the radiator of a hot engine, then the pressure in the cooling system will drop, while the temperature of the coolant may at this moment be higher than its boiling point at normal atmospheric pressure. To remove the hermetic plug under these conditions means to relieve the pressure in the cooling system to atmospheric pressure - as a result, the coolant will instantly boil. Vapors of boiling liquid will escape from the neck of the radiator, splashing in all directions. Not only will some of the coolant be lost, but high-temperature coolant escaping from the radiator neck can cause injury and burns.
The coolant is replaced periodically.
An air lock in the engine cooling system is one of the main reasons for the long engine warm-up to operating temperature. Therefore, every driver should be interested in removing the airlock from the cooling system of his car.
How to expel an air lock from the cooling system?
According to the law of physics, air accumulates in the highest place. In a car, the highest link in the coolant circuit is the throttle assembly. That is why the air must be removed from there. There are several ways to get rid of an airlock. Here is the first one below:
If you have a 1.6-liter engine, then the first thing to do is remove the plastic lining on the engine - unscrew the cap on the engine to fill in oil, and then pull out the entire lining. It is seated on rubber seals. After removing this plastic screen, we twist the oil cap back in order to avoid dirt getting into the engine crankcase.
- We find the nozzles for heating the throttle assembly (there are 2 of them), see the figure. Pick up any handset
- Next, unscrew the cap of the expansion (coolant tank) tank, and cover the neck of the tank with a clean rag.
- We begin to blow into the tank with liquid. We blow until all the air comes out of the hose and antifreeze flows.
- We quickly put the tube back on and tighten it with a clamp so that air does not get in there.
(It is worth noting that, depending on the tube that you removed, the antifreeze may flow both from the tube; and from the fitting from which the tube was removed)
The second way to remove air from the cooling system is less perverse. There is no need to blow anything here:
- We warm up the engine to operating temperature
- Warm up, turn off the engine
- The expansion tank cap does NOT need to be removed.
- As in the first method, we unscrew the clamp of the coolant pipe on the throttle assembly.
- After removing the throttle assembly heating pipe, let out the air, and after the antifreeze starts to flow out, immediately put it back on the fitting and secure it well with a clamp.
But be careful and careful! Do not forget that the temperature of the coolant is about 90 degrees.
There is also a simpler, but less effective method air lock removal:
1) We drive up a steep hill so that the radiator cap becomes the highest point of the cooling system.
2) Unscrew the cap of the expansion tank and the radiator cap.
3) Let the car warm up to operating temperature
4) Then we gas several times and simultaneously pour coolant into the barrel.
Keep doing this until the bubbles stop appearing.
How to remove an airlock on a VAZ with electronic (e-gas)?
Because the cooling system throttle valve missing, you need to bypass this node. Here you can also put the car on the rise.
I hope that these three methods will help you solve the problem, and you have found all the answers to your questions on the topic “How to get rid of an air lock?”
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Do I need to warm up injection engine
lada-vaz-2114.ru
How to expel air from the VAZ 2114 cooling system
The ability to cool automobile engines is rightfully considered one of the important components for ensuring the stability of its operation and achieving the best indicators of power, torque, and fuel consumption. It uses liquids as a coolant, such as water, antifreeze or antifreeze. There are also motors where heat is removed from the engine by the air flow forced by the fan.
The presence of an air lock interferes with the normal operation of the cooling system
Features of cooling the engine VAZ 2114
On this car, as well as on VAZ 2113 and VAZ 2115 cars, a closed VAZ liquid cooling system is used, the coolant in which antifreeze or antifreeze is used. The coolant circulates through special channels in a running motor. Its circulation is provided by a pump, which is driven into rotation. crankshaft motor with a drive belt.
Regulates the flow of coolant, its direction, a device called a thermostat. It is designed in such a way that before the coolant warms up to the operating temperature, it circulates in a small circle, bypassing the radiator. When the liquid reaches a temperature of 870C, it opens, the liquid flow is directed to the radiator for cooling.
The radiator is blown by a stream of oncoming air, and when it is not enough, an electric fan is turned on. For these purposes, a sensor is installed in the radiator, which gives a signal to turn it on. Also, hot liquid flows through the radiator of the stove and heats the interior of the car in cold weather. Excess antifreeze from thermal expansion is collected in an additional tank, which is called an expansion tank.
Air in the system
Air in the engine cooling system, an unacceptable phenomenon. Heat exchange processes in the motor are disturbed, which can cause it to overheat, thereby creating the prerequisites for failure. In cold weather, there will be no heating of the car interior, body glazing. Sensors installed in injection motors begin to give out distorted information in the electronic unit control, which disrupts the engine's duty cycle.
Why do air pockets occur?
In order for an air lock to occur in the cooling system, one of several possible causes her appearance. These can be such violations in the system:
- The clamps of the rubber pipes are not tightened enough, because of this, air leakage is possible, and this leads to the fact that an air lock appears in the VAZ 2114 cooling system. This is especially true for the cold season, when, due to frequent temperature changes, they expand and contract many times ;
- Hanging of the valve built into the cover of the expansion tank;
- The tightness of the water pump is broken;
- The presence of damage in the form of cracks, leaks in the main radiator or additional for the stove;
- Burnt-out gasket between the cylinder block and the block head.
Gasket burnout
They can also add problems of clogging of radiators or channels in the cylinder block, breakage of pump blades. The conclusion from the above is that it is necessary to immediately remove the air lock.
How to get rid?
Before starting work on getting rid of air from the system, it is necessary to carefully inspect it. Eliminate all, if any, leaks, stretch all the clamps on the nozzles, otherwise all the work may be in vain. Make sure that the “main distributor” of the coolant flow, meaning the thermostat, is working.
In order to expel air from the VAZ cooling system, there are several ways. Let's take a look at them:
- The first way will be as follows. Air bubbles are always lighter than any liquid, so they always collect at the top of a closed vessel. For VAZ 2114, this will be a throttle assembly. You can remove the air plug from this node like this. Remove the decorative engine panel to gain access to the throttle assembly. Unscrew any of the two tubes from this node. The clamp must be left on the tube to quickly put it in place. Now you need to create excess pressure in the additional tank. This can be done if the expansion tank is fed in any improvised way. compressed air. It will force antifreeze out of the tank, which in turn will be able to remove air from the system. Some sources recommend blowing into the neck of the expansion tank. It is undesirable to do this, because antifreeze or antifreeze are highly toxic substances, if they enter the body, they can cause serious harm. As soon as antifreeze or antifreeze appears from the tube or pipe, they quickly put everything in place and tighten the clamp well;
- Removing air from the cooling system in the second way has some similarities with the previously described method. You can bleed air like this. It is necessary to put on gloves and on a well-heated engine, disconnect the pipe from the throttle assembly, you do not need to open the plug on the additional tank. Release air, make sure that coolant flows from the pipe or tube, and put everything back in place;
- The turn has come to consider the following way how to expel an air lock from the engine cooling system. In this case, you need to put the car in such a way that the expansion tank is the highest point in the system. With this method, it is desirable to have an assistant. Open the plug on the expansion tank and warm up the engine. When the operating temperature is reached, the assistant regasses several times, and at this time it is necessary to add antifreeze or antifreeze to the tank. It must not be allowed to remain completely without liquid. Do this until all the air is bled from the system.
The third way is good for car owners with electronic pedal gas. With this scheme, there is no cooling of the throttle assembly, so the air lock is removed using any available hill.
I would like to hope that this article will be useful to owners not only VAZ cars and will help them in getting rid of air locks in the engine cooling system.
autovaz-2114.ru
Instructions for releasing the VAZ-2115 cooling system from air locks
Due to the cooling system, the vehicle is able to very quickly reduce the temperature of the main engine parts heated during operation and other components that are subject to overheating. It should be noted that not only parts are cooled, but also gas and oil. By means of a simple device, the engine is protected from severe overheating. With the help of various coolants, which are antifreeze and antifreeze, "traveling" through special channels, heat is taken in and subsequently cooled in the system radiator. However, the functionality of the unit may be impaired, which most often contributes to the appearance of an air lock. In the material below, we will consider three effective methods that have proven to be effective in practice and can help any motorist who has a VAZ-2115 stove airborne.
The first signs of a malfunction signaling a problem
Almost every experienced car owner of the domestic vehicle knows how to expel air from the VAZ-2115 stove. The fact is that, as practice shows, this phenomenon manifests itself quite often and is of a periodic nature.
Most often, the malfunction manifests itself due to the mistakes of the motorist himself, who incorrectly tops up or changes the coolant. Less commonly, the problem manifests itself if it is found:
- suction, which is present at the junction of the nozzles;
- atmospheric valve defect;
- pump depressurization;
- leaks in radiators.
However, whatever technical side question did not force the car owner to get rid of the air lock, it should be remembered that if this problem exists, the motor will start to warm up and cool down for too long. Due to airiness, the coolant will not move normally to the cooling radiator, which will lead to overheating power unit.
Methods to expel air from the VAZ-2115 stove
If a motorist diagnosed his car and realized that his VAZ-2115 stove was airy, you should use at least one of the methods below, which are considered quite effective solutions to the problem.
The first method (blowing the system)
According to the very first method, the motorist needs to dismantle the plastic casing that covers the power unit of the vehicle. To remove this structural element, you will have to unscrew the cap that covers the hole for adding oil. Then you need to remove the cover. It is worth noting that immediately after removing the protective cover, the cover should be returned to its place, which will keep the power unit clean, preventing the ingress of dirt and dust.
The next step, which can solve the problem of the airiness of the system, should be the search for pipes responsible for heating the throttle assembly. At this stage, it is necessary to pull off any branch pipe and, having twisted the lid from the opening of the antifreeze container, cover the resulting "hole" with a clean rag.
To get rid of the malfunction, you will have to actively blow through the interior of the tank. Through such actions, pressure is created that pushes the collected air out. The need to stop the procedure should be indicated by the antifreeze coming from the pipe, since it will start to come out only after there are no air accumulations in the system.
After blowing the VAZ-2115 system, the tube must be returned to its original place, and you should not hesitate, everything should be done as quickly as possible, otherwise a “portion” of unnecessary air will reappear in the tank.
Second method
If the VAZ-2115 stove is very airy, you can get rid of the resulting plug in just a few minutes without blowing the system. To expel the accumulation of air, after actively warming up the power unit for 15 minutes, turn it off and, with the cover of the expansion tank closed, remove any pipe on the throttle assembly. After antifreeze or antifreeze starts to come out, you must quickly insert the pipe into its original place. However, when using this method, one should not forget that after the operation of the power unit, the antifreeze could warm up to 80 ° C.
Third Method
The instructions described below will most likely help everyone who has a VAZ-2115 stove aired. To clean the system, you must first put the car at an angle, a steep hill is suitable for this, the vehicle must stand at the highest point with its nose. After the car is put on hand brake, and special stands will be installed under all wheels to protect the driver from unexpected rolling, you need to twist the plugs that close the holes on the radiator and expansion tank.
The power unit must be activated for at least 10 minutes so that it has time to warm up, then you need to periodically press the accelerator pedal, while adding coolant to the system.
Topping up antifreeze or antifreeze should be done until bubbles stop appearing. After their complete disappearance, the work can be completed.
Conclusion
With a competent approach, any owner of a domestic vehicle can get rid of an air lock in the cooling system, and everything can be done without contacting qualified specialists, quickly and at no cost. It is worth noting that as soon as a similar problem has been diagnosed, you should not postpone its solution, as many additional problems may appear in the future. The performance of the power unit and its constituent components depends on normal access for the circulation of antifreeze or antifreeze.
remam.ru
Removing air locks from the stove VAZ-2114
Airing the heating system on VAZ-2114 cars is a fairly common phenomenon. Faced with the problem of an air lock, you can solve it yourself. The main thing here is to find the reason, and then use one of the three most effective methods.
Features of the cooling system
To understand the essence of airing and the consequences that an air lock can lead to, you need to understand the cooling system itself. It is not recommended to start repairs with your own hands, without possessing at least elementary theoretical knowledge:
- VAZ-2114 cars are based on a closed liquid system cooling;
- antifreeze or antifreeze is used as a coolant;
- special channels serve to circulate the coolant through the engine;
- circulation is carried out using a pump, and this, in turn, drives the crankshaft through drive belt;
- the thermostat is responsible for regulating the flow of coolant and its direction;
- the thermostat has a design that allows it to circulate in a small circle until the coolant is heated to the desired parameters (no coolant enters the radiator);
- when the temperature reaches 87 degrees, the opening occurs and the coolant penetrates directly into the radiator;
- the radiator is blown by air flows when the car is moving;
- if natural airflow does not cope, then the electric fan is activated;
- a special sensor is responsible for its inclusion;
- hot liquid penetrates through the heater radiator and allows you to warm up the antifreeze in winter;
- excess antifreeze, which is formed during its thermal expansion, is in an additional (expansion) tank.
As you can see, if there is a plug in this circuit, this can lead to serious negative consequences for VAZ-2114.
Causes of cork formation
In no case should air be allowed to enter the engine cooling system. This will lead to violations of heat transfer, which will entail overheating of the engine, lack of heat inside the cabin, and more. The engine receives false information from the sensors, therefore it ceases to function correctly.
If your VAZ-2114 stove is airy, there may be several reasons:
- Fixation of rubber pipes. Often the clamps loosen, which leads to a violation of tightness. Air is sucked through them, which leads to the appearance of air congestion. Most often, a similar phenomenon is observed in winter - sharp temperature changes compress and unclench the rubber of the pipes.
- Pump. Another fairly common cause is the pump. The problem is the same - a violation of the tightness of the water pump.
- Valve. It is worth paying attention to the valve that is built into the expansion tank (on the lid). If it hangs, it can provoke airing.
- Radiator damage. Cracks can occur on the main radiator or on the auxiliary one, that is, on the heater radiator. In these situations, the probability of air lock formation is equally high.
- Head gasket. If it burns out, the tightness will be broken and air will begin to leak. As a result, there is a blockage in the system.
And also among the possible causes of airing or the formation of an air lock include:
- damage to the pump blades;
- clogging of the channels of the cylinder block;
- radiator contamination.
Important! Before you get rid of the cork, be sure to eliminate the cause that led to the airing. Tighten the clamps, replace the gasket, clean the radiator, etc.
Problem Solving Methods
If you do not remove excess air from the system, this will lead to the following consequences:
- increased fuel consumption;
- low efficiency of the stove;
- engine wear;
- breakdowns.
Important! The laws of physics say that air tends to the highest point. When airing the stove on the VAZ-2114, this place will be the throttle assembly. So the cork should be expelled from there.
In total, there are three methods of combating airing. Each of them has its own nuances.
First method
Some perceive this method critically, but in fact it is very effective.
- Remove the filler cap through which the oil is poured. This will allow you to dismantle the plastic protection from the mounts (they are rubber).
- It is better to immediately screw the cap back on, otherwise you risk bringing excess dirt into the motor.
- Remove one of the tubes designed to heat the throttle. It doesn't matter which one.
- The expansion tank has a cap. It should also be removed.
- Start actively blowing into this very tank. The fact that you managed to expel the air will be indicated by antifreeze or antifreeze flowing from the dismantled pipe.
- Return everything as quickly as possible, twist the tube and fix the clamp. If you delay, the suction will start again and you will have to repeat the procedure.
The method is not complicated, but not everyone will agree to it. 'Cause look at alternative options.
Second method
You don't have to go anywhere here. The job is no less easy.
- Warm up the engine so that it reaches a temperature of about 90 degrees. After that turn off the engine.
- So far, the plug on the expansion tank remains there. You don't need to touch it.
- At the throttle assembly, remove the clamp and tube. That is, you should act similarly to the first method.
- Wait until all excess air has been expelled from the system. It is easy to determine this - coolant will begin to flow after a while.
- When the leak begins, immediately return the pipe to its place, fixing it on the fitting and tightening the clamp until it stops. Make sure that the clamp is properly tightened, otherwise the work will be in vain.
Important! In this situation, follow the antifreeze. It is hot, and therefore its exit from the system may cause hot liquid to get on your skin.
Third Method
A number of VAZ-2114 owners note that it was in this method that they found the best way to deal with the problem of airing. But it will be necessary to create certain conditions.
- Choose a place where you can drive the front wheels of the car so that the radiator cap is located as the highest point of your cooling system. Although the front end can simply be raised in the garage with a jack. Act at your own discretion.
- Remove the caps from the radiator and expansion tank.
- Turn on the engine. Let it warm up to 90 degrees.
- Actively press the gas pedal. Just make sure you don't have transmission enabled before doing this.
- Help will be needed, because when gasping, it is necessary to simultaneously pour coolant gradually into the reservoir. Pour until bubbles no longer form when you press the gas.
Important! Although the third method is considered easy to implement, it does not always give the desired result. So the previous two, although more difficult, but the effect of them is higher.
The problem of airing is familiar to many owners of VAZ-2114 cars. Tell us about your solution methods, share your impressions of the presented methods of dealing with air congestion. It will be interesting to learn about alternative methods and features of their implementation.
The VAZ-2115 cooling system is not the most complex part of a car, but extremely important. Problems can lie in wait at the most inopportune moment - on the way. You can check and even eliminate most of the malfunctions of the VAZ-2115 cooling system even in the garage (which you still have to get to), even in an open field.
- If a malfunction occurs in the cooling system, we move off the road and stop the engine.
- Open the hood and carefully inspect the engine compartment. If steam breaks out, we determine a specific place. We inspect the engine, check the expansion tank for the position of the coolant level. For one, we determine the state of the thermostat, radiator, rubber hoses in the engine cooling system.
- It is impossible to unscrew the cap of the expansion tank immediately after stopping the engine. The fluid in the cooling system is under high pressure. When we unscrew the plug, the pressure drops sharply, and according to the laws of physics, the coolant boils. Naturally, its splashes can lead to burns to the hands and face. If there is an urgent need to unscrew the plug of the expansion tank on an engine that has not yet cooled down, you need to throw some thick fabric on top and only then slowly unscrew the plug.
- We will not be too lazy to look under the instrument panel of the VAZ-2115. Under it, streaks of coolant oozing from the heater or radiator tap may be found. If coolant leaks are caused by a burst hose, it can be temporarily patched with adhesive tape (duct tape, adhesive tape).
- Much more problems if the leak comes from the heater, radiator or thermostat. It's hard to get rid of it along the way. In this situation, it is recommended to add water to the cooling system and monitor the temperature readings during the trip. If necessary, the level in the cooling system will have to be periodically restored. Please note that if you use water instead of antifreeze for a long time, this will most likely provoke the formation of scale in the VAZ-2115 cooling system. As a result, cooling will deteriorate, and the motor resource will decrease. Therefore, after an emergency trip, be sure to fix the leak, drain the liquid diluted with water, flush the system and fill in fresh coolant. The most important condition is in an overheated engine cold water pouring is prohibited! The motor must be cooled for at least half an hour with the hood open.
- If the VAZ 2115 cooling system is faulty, and no coolant leaks are observed, we check the integrity of fuse No. 5 (at 20A). It performs the function of forced protection of the onboard power circuit in the electric fan of the cooling system. The fuse is located in mounting block located in engine compartment. If the electric motor starts working after replacing the fuse, the trip can be continued.
- If the electric motor does not work after replacing the fuse, we will carry out additional diagnostics. Take two additional wires and supply power to the electric motor directly from battery. Please note that the wires must be insulated and securely fastened. Short circuits between wires are not allowed! Be sure to pay attention to the polarity of the connection: the electric motor must rotate in such a way that the fan blows air onto the engine through the radiator, and the directions of the incoming (travel) air flow and the air flow formed by the fan coincide.
- If the electric motor starts working after these manipulations, then the wiring of the cooling system or the fan switch relay is faulty. The relay is located under the trim with right side consoles dashboard VAZ 2115. If the engine is deaf, there may be a malfunction of the electric motor itself or the wiring. Unfortunately, neither the electric motor nor the relay can be repaired and will require replacement.
- The engine can also overheat if the thermostat fails. This unit regulates the flow of fluid through the cooling system either bypassing the radiator (to speed up the warm-up of a cold engine), or through the radiator. Checking the thermostat is not difficult: on warm engine We feel the lower hose connecting the radiator and the engine. If the hose is cold, the thermostat is most likely defective, so no coolant is circulating through the radiator.
The cooling system is of great interest to motorists. Model 2115 machines have a hidden cooling system based on the use of a special cooling mixture. The movement of the cooling mixture occurs under the influence of a mechanical pump.
Assembly principle of many Russian cars carried out rather poorly, so the performance of many mechanisms, including the cooling system, leaves much to be desired.
To identify and produce the necessary repair work, you need to have an idea about the condition and method of operation of the cooling system.
Airlock
If you have a 1.6-liter engine, then the first thing to do is remove the plastic lining on the engine - unscrew the cap on the engine to fill in oil, and then pull out the entire lining. It is seated on rubber seals. After removing this plastic screen, we twist the oil cap back in order to avoid dirt getting into the engine crankcase.
- We find the nozzles for heating the throttle assembly (there are 2 of them), see the figure. Pick up any handset
- We start blowing into the tank with liquid. We blow until all the air comes out of the hose and antifreeze flows.
- Quickly put the tube back on and tighten it with a clamp so that air does not get there.
(It is worth noting that, depending on the tube that you removed, the antifreeze may flow both from the tube; and from the fitting from which the tube was removed)
The second way to remove air from the cooling system is less perverse. There is no need to blow anything here:
- Warm up the engine to operating temperature
- Warm up, turn off the engine
- The expansion tank cap does NOT need to be unscrewed.
- As in the first method, we unscrew the clamp of the coolant pipe on the throttle assembly.
- Having removed the heating pipe of the throttle assembly, let out the air, and after the antifreeze starts to flow out, immediately put it back on the fitting and secure it well with a clamp.
But be careful and careful! Do not forget that the temperature of the coolant is about 90 degrees.
There is also a simpler, but less effective way to eliminate an air lock:
1) We drive up a steep hill so that the radiator cap becomes the highest point of the cooling system.
2) Unscrew the cap of the expansion tank and the radiator cap.
3) Let the car warm up to operating temperature
4) Then we gas several times and simultaneously pour coolant into the barrel.
Keep doing this until the bubbles stop appearing.
Replacing nozzles
The cooling system uses 4 rubber pipes:
- upper inlet pipe - brings the cooled liquid from the radiator to the engine;
- the lower outlet pipe - removes the heated liquid below from the engine to the radiator;
- two short pipes that connect a water pump and a thermostat to the system.
In case of failure, the nozzles must be replaced. In this case, it is best to purchase silicone nozzles.
To remove old and install new silicone (rubber) pipes, you must have a set of wrenches, several screwdrivers and silicone grease.
Repairs associated with the replacement of nozzles must be carried out in the following order:
1. Disconnect and remove the battery;
2. Drain all coolant mixture;
3. Remove the fan, soundproof upholstery, trim and frame trim from the windshield;
4. Free access to the air collector, for which remove the elements of its fastening;
5. Remove the front housing and release the clamps that hold the nozzles;
6. Remove the pipes from the fittings and install new ones (silicone or rubber) in their place. Fasten the new pipes with clamps. Before installation, it is recommended to lubricate the rubber nozzles with silicone grease. It is also advisable to lubricate the clamp screws with silicone grease. Subsequently, this will allow them to be easily unscrewed;
7. Install all removed parts in their places, flush the system and fill it with a new coolant mixture.
How to rinse
Flushing the cooling system with water
Although it is possible to flush the system with water, I would strongly not recommend doing this. As I said, it contains a large amount of impurities and salts that form scale. If there is no other option, then at least use distilled water. Flushing the cooling system with distilled water is carried out as follows:
- Pour water into the SOD.
- Start the engine and let it run for about half an hour.
- Then turn off the engine and drain the water from the system. Repeat the procedure until your flush fluid is the same as before flushing. The disadvantages of this method include: scale formation, low efficiency (boiling water is not able to dissolve and wash scale and other deposits).
Flushing the cooling system with water, acid and vinegar
Water with vinegar and acid is a little better than just water, because thanks to acids, scale can be washed off and the cooling system can be partially cleaned. In order to flush the system in this way, prepare: caustic soda, lactic acid and vinegar. Acid is added carefully and a little bit, if you overdo it, you can say goodbye to the plastic and rubber parts of the cooling system. To completely remove scale and dirt, it takes 5-10 hours, during which it is necessary to periodically warm up the engine to operating temperature. At the end, all the liquid is drained and distillate is poured, which is used for the final flushing of the cooling system.
SOD flushing with special chemicals
Specialist. means is the most effective and costly option. However, the effectiveness of such a procedure is worth overpaying. Cleaning products contain special cleaning agents that actively remove scale, grease, organics, etc.
Washing spec. means are divided into four types: acidic, alkaline, two-component, neutral type.
The least popular are acidic and alkaline, besides, they are almost impossible to find undiluted. This is due to their aggressive effect on the entire cooling system, in essence plastic and rubber products.
Two-component products are very popular and in great demand. Their 2-component solution consisting of alkali and acid does the job well. Each of the components is alternately poured into the radiator.
Neutral cooling system cleaners do not contain aggressive substances, such as acids or alkalis, and they are used exclusively for preventive purposes.
The cooling system of the VAZ-2115 is not the most difficult part of a car, but it is very important. Difficulties can lie in wait at the most inopportune moment - on the way. You can check and even remove most of the defects in the VAZ-2115 cooling system even in the garage (which you still need to get to), even in an open field.
- If defects appear in the cooling system, we move off the road and stop the engine.
- Open the hood and carefully examine the engine compartment. If steam breaks out, we determine a specific place. We inspect the motor, check the expansion tank for the position of the cooling water level. For one thing, we determine the state of the thermostat, radiator, rubber hoses in the engine cooling system.
- It is impossible to immediately unscrew the plug of the expansion tank after stopping the engine. In the cooling system, the liquid is under enormous pressure. When we unscrew the plug, the pressure drops sharply, and according to the laws of physics, the coolant boils. Naturally, its splashes can lead to burns to the hands and face. If there is an urgent need to unscrew the plug of the expansion tank on an engine that has not yet cooled down, you need to put some thick fabric on top and only then slowly unscrew the plug.
- We will not be too lazy to look under the VAZ-2115 device panel. Under it, streaks of cooling water oozing from the heater or radiator tap may be found. If the cooling water leaks are caused by a broken hose, it can be temporarily patched up with adhesive tape (duct tape, scotch tape).
- Even more problems if the leak comes from the heater, radiator or thermostat. It's hard to remove along the way. In this situation, it is recommended to add water to the cooling system and watch the temperature readings while driving. As needed, the level in the cooling system will have to be restored from time to time. Please note that if water is used instead of antifreeze for a long time, this will most likely provoke the formation of scale in the VAZ-2115 cooling system. As a result, cooling will worsen, and the motor resource will decrease. Therefore, after an emergency trip, be sure to clean up the leak, drain the liquid diluted with water, wash the system and fill in fresh coolant. The most fundamental condition is that it is forbidden to add cool water to an overheated engine! The motor must be cooled for at least half an hour with the hood open.
- If the VAZ 2115 cooling system is faulty, and no cooling water leaks are observed, we check the integrity of fuse No. 5 (at 20A). It makes the function of forced protection of the onboard power circuit in the electric fan of the cooling system. The fuse is located in the mounting block located in the engine compartment. If the electric motor starts working after changing the fuse, the trip can be continued.
- If the electric motor does not work after replacing the fuse, we will carry out additional diagnostics. We take two additional wires and supply power to the electric motor directly from the battery. Please note that the wires must be insulated and securely fastened. Short circuits between wires are not allowed! We certainly pay attention to the polarity of the connection: the electric motor must rotate in such a way that the fan blows air onto the engine through the radiator, and the directions of the incoming (passing) air flow and the air flow formed by the fan coincide.
- If the electric motor starts working after these manipulations, then the wiring of the cooling system or the fan switch-on relay is faulty. The relay is located under the overlay on the right side of the VAZ 2115 dashboard console. If the engine is deaf, a malfunction of the electric motor itself or the wiring is likely. Unfortunately, neither the electric motor nor the relay can be repaired and will require replacement.
- The engine can also overheat if the thermostat fails. This unit regulates the flow of water through the cooling system, either bypassing the radiator (to speed up the warm-up of a cold engine) or through the radiator. It is easy to check the thermostat: on a warm engine, we feel the lower hose connecting the radiator and the engine. If the hose is cool, the thermostat is most likely defective because no cooling water is circulating through the radiator.
White smoke from exhaust pipe- gases went into the cooling system
Engine cooling system device internal combustion
Troubleshooting Your Vehicle's Cooling System
The engine is constantly warming up: causes, troubleshooting