How to replace antifreeze on a VAZ 2107 injector

Stages of replacing coolant VAZ 2107

On most classic Lada cars, drainage is provided from the radiator, as well as the engine. But before adding new antifreeze, it is recommended to flush the cooling system to prevent impurities from getting into the new liquid.

During the production of the VAZ 2107, a large number of modifications were produced, which were equipped with various engines. But at the moment the most popular are gasoline versions in carburetor and injector versions.

Before you start replacing the coolant, to avoid getting burned, you need to wait until the engine has completely cooled down. You should also avoid getting antifreeze or antifreeze on the skin, eyes or digestive organs, since the chemical composition of the liquids is toxic.

Coolant drain

Before starting the draining procedure, you should prepare tools, containers for used antifreeze, as well as new liquids for subsequent refilling. If protection is installed under the engine, it can also be removed for convenience.

Next, we perform the procedure for draining the liquid from the VAZ 2107:

Turn the temperature regulator in the cabin to the maximum position to the right (Fig. 1).

Flushing the cooling system

If there are deposits in the drained liquid or there is a transition from antifreeze to antifreeze, the system should be flushed. To do this you need to do the following:

Flush the system with plain water through the expansion tank of the VAZ 2107. The plugs must be open;
tighten the drain plug and bolt;
fill the system with a flushing agent (you can use Liqui Moly Kuhlerreiniger or Lavr cooling system flush) with distilled water (6-7 liters);
start the engine. Warm up to 90 degrees;
leave it idling for 5-10 minutes, depending on the contamination of the system;
muffle it. Allow the engine to cool to approximately 60 degrees;
drain the flush using the same steps as removing the old fluid;
tighten both plugs;
fill with distilled water to rinse the cooling system;
start the car and warm up to 90 degrees;
turn off and let cool to 60 degrees, drain;
repeat steps 8, 9, 10 and 11 if necessary.

Filling without air pockets

To fill new fluid into the cooling system, you can use the instructions described in the book on car repair and operation. But when doing this, motorists very often end up with air jams.

So, let's start filling it correctly:

If you have an injector, then remove one of the hoses going to heat the throttle assembly (Fig. 6).

Thus, the filling of coolant without the formation of air pockets is completed. All that remains is to wipe off the spilled antifreeze and wait for the engine to cool. With the car now cooled down, check the level in the expansion tank again and top up if necessary.

Methods for replacing antifreeze

Many beginners do not know how to drain antifreeze from a VAZ 2107. Since it is a toxic substance, it must be treated with extreme caution, and it is better to adhere to general safety rules. Immediately before draining the liquid from the car, you need to prepare some kind of container or simply use an unnecessary basin . The following steps are followed:

To begin with, the car is put on the handbrake, then a container is placed under the engine to drain the used fluid.
Then you need to open the hood, find the expanded tank and unscrew the cap so that the pressure drops. Such actions are carried out to speed up the process.
The lid on the radiator also opens.
The lid on the stove opens from inside the car. To drain the remaining antifreeze, you need to set the lever to the warm position.
The next step is to unscrew the bolt plug from the cylinder, or rather, from its lower part.
Then the cap on the radiator drain hole is opened.
The antifreeze begins to gradually flow into the container, the process of its release takes about ten minutes.
Afterwards, you need to make sure that all the liquid has come out; if anything remains, it needs to be drained.

In order to correctly fill the liquid and it does not leak out, you need to check the integrity of the pipe. If the pipe is damaged even slightly, it should be replaced. Replacing the coolant in the injection VAZ 2107 is carried out as follows:

First, you need to unscrew the sensor between the third and fourth spark plugs to prevent air locks from appearing in the cooling system.
The solution must be poured through the hole located in the radiator; it must be poured until everything is filled. The volume here reaches five liters.
The sensor turns on, but the antifreeze continues to fill.
The liquid must be filled completely until the radiator is filled to the brim.
When the entire procedure is completed, the radiator is closed with a lid. The remainder is added to the cooling system in the expanded tank to the maximum mark.

It is very important to remember that replacement occurs when the radiator has cooled down. A VAZ 2107 or 7 may have injectors or a carburetor. The carburetor operates using a simplified cooling system.

The operation of the injector depends on the system of installed devices and temperature sensors. All screwing of the lids can be done with a simple thirteen key. Why do you need antifreeze:

Maintaining engine temperature during operation.
Maintaining a low temperature of the liquid in the automatic transmission.
For heating the interior. The liquid provides heat to the car by circulating through the heater. The motor heats the liquid, and the fan moves the heat into the cabin.

Antifreeze has many advantages, the main one is the continuous operation of the engine. If the cooling system operates without interruption, the liquid will not boil and the engine will continue to operate for a long time. Antifreeze is safe for the car; it does not contain substances contraindicated for cooling systems.

Replacement frequency, what antifreeze to fill

According to the manufacturer's recommendation, it is necessary to replace antifreeze or antifreeze on VAZ 2107 cars every 2 years or after a mileage of 60 thousand kilometers. If the car is used in more severe conditions, then it is advisable to replace it more often - every 30-40 thousand kilometers.

In addition to the recommended coolant change intervals, there are other reasons why it is necessary to change the fluid in a car's cooling system:

Loss of properties. You can check the quality of the antifreeze used using a test strip, which is sold in the same places where the liquid itself is sold. Place the strip in the expansion tank, then pull it out. The strip comes with a color scale, according to which you can understand how much longer the car can be used before replacing the coolant.
Change in color to red or red. This means that rust has appeared in the composition.
The appearance of sediments, flakes and dense formations.

As a coolant for the VAZ 2107, you can use good Lukoil antifreeze. Or a lesser-known but high-quality product from Gazprom Neft. When replacing, you can also fill in antifreeze, preferably with G12 approval, it is safer for the entire system. You can also use original Lada G12 antifreeze, which is suitable for all cars of this manufacturer.

How much antifreeze is in the cooling system, volume table

Model	Engine capacity	How many liters of antifreeze are in the system	Original liquid / analogues
VAZ 2107	1.6	8.6	Antifreeze Lada G12
			Antifreeze Gazpromneft
			Antifreeze Lukoil

Causes of malfunction

How to determine what is wrong if antifreeze is leaking? There can be many reasons for malfunctions, so we will present only the main ones.

Carefully inspect the clamps. It is possible that the cause of the leak is a clamp that is not fully clamped.
Inspect the pipes for cracks. If a crack is found, replace the pipes.
Radiator damage. This is a mechanical problem. If the damage is minor, it can be repaired by gluing or welding. Gel sealant will be a good help in identifying the location of the leak.
Another reason for antifreeze leakage is pump wear. The solution is to replace it, as in the case of pipes.
Coolant leak near the head. There is no solution at home - you need to contact a service station, since a qualified inspection and disassembly of the engine is required.
If you find antifreeze stains under the driver's or passenger's floor mat, it means it is leaking into the cabin. You should also contact a service station with this problem.

Leaks and problems

Cars of this model sometimes have problems associated with the failure of some parts of the cooling system, such as a thermostat or pump. If they break down, they are replaced as an assembly, fortunately they are not expensive. Also, leaking hoses or a cracked expansion tank are considered a common problem, which also needs to be replaced.

But there is another problem with the VAZ 2107, a leaking heater valve. Because of this, there may be a smell of antifreeze in the cabin, wet floor mats on the front passenger side, or the heater may not work.

In cases of boiling or seething antifreeze in the expansion tank, you need to pay attention to 2 things. This is either an air lock or a broken cylinder block gasket. When determining the problem, in the first case the stove will blow cold. In the second case, there will be either oil in the antifreeze or light smoke from the exhaust pipe.

Why does it flow

There are many options for why coolant may leak. It is very difficult to determine this location of the leak. The main ones are:

View all pipes; perhaps one of the clamps is not clamped properly.
The pipe itself has cracked from time to time.
The cause of mechanical damage is in the radiator. This can be corrected by welding or gluing. You can determine the location of the leak in the radiator using dismantling or gel sealant.
Water pump. Over time, the pump, like any other part, can wear out and leak. In this case, the pump will have to be replaced.
The element leaks out from under the head. It is better to correct such a leak at a service center, since this will require disassembling the engine.
When the element leaks directly into the vehicle's cabin. This can be determined by lifting the floor mat on the driver or passenger side.

Sources

avtozam.com/vaz/2107/zamena-ozh/
autozaliv.ru/service/zamena-antifreeze/pomenyat-tosol-vaz-2107
drive2.ru/c/486839010841330110/
bumper.guru/klassicheskie-modeli-vaz/sistema-ohdazhdeniya/zamena-tosola-vaz-2107.html

Video

After repair work related to the cooling system, for example replacing the pump on the seven, the radiator, or the head gasket, you need to fill in the coolant. In a classic carburetor or injection system, you need about 10 liters to fill the system.

In order to fill in antifreeze (antifreeze) and not get an air lock, which during operation will lead to engine overheating and poor heater performance, several conditions must be met:

position the car (or jack it up) so that the front end is higher;
loosen the clamp and remove the hose from the throttle valve on the injector or the hose from the manifold on a carburetor engine;
open the plugs on the expansion tank and radiator;
check if the drain plugs are closed;
Slowly pour antifreeze into the radiator through a funnel. It will not go away quickly since the cold thermostat will be closed, to speed up the process the hose is removed from the throttle assembly;
fill the radiator to the brim and close the cap;
Reinstall the hose going to the throttle;
fill the tank to the level and close it;
start the engine and let it run;
turn off the engine and add fluid if necessary

There is another way to ventilate the cooling system, but it is shown in this video:

The machine is ready for use.

2 Comments on “How to fill antifreeze into a VAZ”

I replaced the antifreeze with a new one, but now I can’t fill the full system. Only 7 liters will fit, at least you need to fill a couple more. What is the reason?

The reason may be a closed heater tap or antifreeze remaining in the system.

Coolant plays an important role in the engine cooling system. Without it, the engine will not be able to operate for a long time. Thanks to antifreeze, the life of the engine is extended due to the fact that it is constantly cooled.

Why then is it necessary to change antifreeze for the VAZ 2107? As it is used, the coolant loses its original properties and is unable to cool the engine. Timely fluid replacement is a process that can be easily done at home if you know the replacement procedure step by step, which will be discussed in the article.

Antifreeze volume in the car

The first thing you need to know is how much antifreeze can be poured into a VAZ 2107 so that it works stably. For cars of brands such as VAZ 2101, 2105, 2106 and VAZ 2107, the volume of fluid is the same - 9.85 liters, it must be replaced every two years. Replacing antifreeze on a VAZ 2107 occurs in the following way:

The first thing you need to pay attention to is the cooling system; if it is clogged, it needs to be washed with special products or water.
Next, you need to take a spanner wrench and a container of at least ten liters to drain the old car fluid. It is very important that the radiator is cold when replacing, since antifreeze is a harmful substance, and when heated it also becomes very toxic.

The volume of coolant in a VAZ 2107 can reach up to ten liters. Antifreeze is suitable for the engine cooling system, as it prevents heat from entering the engine and cools the radiator. The cooled antifreeze is moved to the car engine using a pump. This process continues until engine operation stops. During operation, antifreeze heats up and loses its positive properties, so it must be changed periodically. The process of heating the antifreeze occurs when the car travels a distance of about 60 thousand kilometers.

Timing for replacing coolant in VAZ 2107

The purpose of the coolant in the VAZ 2107 is to remove excess heat from the car’s engine. Indeed, during operation, many parts of an internal combustion engine reach temperatures of 300 degrees C. If the engine is not cooled in time and sufficiently, it will fail. Coolant solves this problem; it is supplied to a running engine, flows through the channels, thus taking away excess heat from the internal combustion engine.

After heating, the coolant goes into the central radiator, which is constantly blown by the fan. After cooling in this unit, the liquid returns to the engine cooling channels. This is the procedure for continuous liquid cooling of the VAZ 2107 engine.

The general principle of operation of the VAZ 2107 cooling system can be studied using the diagram below.

How to understand what kind of coolant is required for a VAZ 2107 - antifreeze or antifreeze? Since we are talking about Russian cars, we should distinguish between concepts such as antifreeze and antifreeze to clarify concepts.

It should be noted that such division and differentiation is accepted only in the Russian Federation. To answer this question, you must first understand: what is coolant?

So, the basis of the coolant is ethylene glycol, less often propylene glycol. Special additives are added to it, which protect against corrosion. Each manufacturer adds different types of additives.

Let us differentiate the coolants available on the modern market according to additive production technologies:

traditional, in which additives are made from salts of inorganic acids: silicates, nitrites, amines, phosphates;
carboxylate, additives are made from organic carbonates;
hybrid, consists of a mixture of organic carbonate additives and inorganic salts (in smaller quantities, including phosphates or silicates).

Instructions for replacing antifreeze

Antifreeze, compared to water, is quite resistant to frost - it does not freeze. It is also not a source of scale, which means it does not clog the cooling system.

But, subjected to constant temperature influences and fluctuations, antifreeze loses its properties during operation:

the boiling point decreases and accordingly becomes equal to the boiling point of water;
The fluid may freeze, resulting in a cracked reservoir or cracked cylinder block.

For these reasons, it is necessary to change antifreeze at least once every six months. It is important to do this during seasonal car maintenance. Timely replacement of coolant will help avoid unpleasant consequences, unwanted repairs and unnecessary waste of money.

So, replacing antifreeze on a VAZ 2107 includes draining the antifreeze, flushing the cooling system (if necessary) and replacing the used coolant with new antifreeze or antifreeze.

You should first prepare the following materials and tools:

canister with new antifreeze (6 liters);
funnel;
wrench “13”;
open-end wrench “16”;
key “12”;
an empty container of 6-10 liters (a cut canister is often used);
a clean rag made from natural fabrics;
Protect your hands with gloves.

Drain

Draining antifreeze from the VAZ 2107 tank includes the following sequence of actions:

Place the car on the inspection hole so that the front wheels of the car are higher than the rear ones;
Move the lever (located on the dashboard) that supplies warm air into the cabin as far as possible to the right;
Open the hood and unscrew the expansion tank cap;
Unscrew the central radiator cap;
Using a 16mm open-end wrench, unscrew the drain plug located on the cylinder block. Place a container prepared in advance, as liquid will begin to pour out. It may take up to 10 minutes to completely drain the spent fluid;
Using a “12” wrench, unscrew the plug on the radiator drain hole, located in its lower part. A special bucket or container is used for draining;
Remove the belt holding the expansion tank by hand. You should raise the tank as high as possible, thus draining the remaining antifreeze from the hose connected to the tank;
After completing the procedure for draining antifreeze or antifreeze, the tank is installed in place, all drain holes are then closed and the cooling system must be flushed.

Flushing

Flushing the cooling system is an important procedure. It determines how effectively the VAZ 2107 engine will be cooled. A number of car owners believe that flushing the cooling system is a waste of time, and immediately fill in new antifreeze or antifreeze after draining the used fluid. This causes clean and dirty fluid to mix, negatively affecting performance.

Flushing the cooling system

Flushing the cooling system is a very important procedure, since the cooling efficiency of the VAZ 2107 engine depends on it. At the same time, many car enthusiasts prefer not to flush the cooling system, but to fill in new antifreeze immediately after draining the old one. As a result, the remnants of the old antifreeze are mixed with the new coolant, which has an extremely negative effect on its performance. That is why it is strongly recommended to flush the engine cooling system before adding new antifreeze. This can be done either with water or with the help of special compounds.

Flushing the cooling system with water

It should be said right away that it is advisable to use this washing option only when there is no good washing liquid at hand. The fact is that ordinary water contains impurities that form scale. And if the driver still decides to flush the cooling system with water, then the best choice in this situation would be distilled water.

More information about diagnostics of the cooling system: https://bumper.guru/klassicheskie-modeli-vaz/sistema-ohdazhdeniya/sistema-ohlazhdeniya-vaz-2107.html

Water rinsing sequence

Distilled water is poured into the expansion tank of the VAZ 2107.

Distilled water is poured into the expansion tank of the VAZ 2107
The engine starts and idles for half an hour.
After this time, the engine is turned off and the water is drained.

The water drained from the VAZ 2107 must be as clean as the water being poured
After this, a new portion of water is poured into the tank, the engine starts again, runs for half an hour, then the water is drained.
The procedure is repeated until the water drained from the system becomes as clean as the water being poured. Once clean water appears, washing stops.

Flushing the cooling system with a special compound

Flushing the cooling system with a special composition is the best, but also very expensive option. Because cleaning products effectively remove residual grease, scale and organic compounds from the system. Currently, VAZ 2107 owners use two-component flushing fluids, which contain both acids and alkalis. The most popular liquid is LAVR. Cost - from 700 rubles.

LAVR flushing fluid is the optimal choice for flushing the VAZ 2107 cooling system

Sequence of flushing the system with a special liquid

The sequence of flushing the cooling system with a special composition is practically no different from the sequence of water flushing mentioned above. The only difference is the operating time of the motor. This time must be clarified (it depends on the composition of the selected flushing liquid and must be indicated on the canister with flushing).

Comparison of VAZ 2107 radiator tubes before and after flushing with LAVR

Selection of antifreeze and antifreeze for VAZ 2107

Considering the previously mentioned advantages, most motorists opt for antifreeze, because saving on coolant will lead to the need for engine repair.

Antifreeze of both domestic and Western production is suitable for the VAZ 2107. Owners of this brand of car prefer, for the most part, Lukoil G12 RED antifreeze.

Antifreeze A40M is considered the most inexpensive domestically produced coolant.