Which expansion tank to put on a VAZ 2114

Inflates the coolant reservoir of the VAZ 2114

The cooling system reservoir swells and tears along the seams. Replacing the tank cap and the tank itself did not give any results. Could the cause of the tank swelling be due to a leaky cylinder head connection and the cylinder head itself? That is, does the cylinder head gasket itself allow gas pressure to pass into the coolant cavity?

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Check with a gas analyzer whether there are gases in the expansion tank.

If the engine is not overheated, then the cylinder head gasket lasts until the engine itself is overhauled (that is, it is approximately 150-250 t.km.).

For gases in the cooling system. If the expansion tank plug is working properly, then it should relieve pressure, that's why it has a valve there in the plug. Bloating occurs due to a faulty valve in the tank plug.

... The problem was that the cylinder head gasket had become unusable and began to leak gas pressure from the working chambers of the cylinders into the cooling system of the internal combustion engine. The boost was so powerful that it unraveled the antifreeze tank along the seam - the plug did not have time to bleed it out.

Expansion tank VAZ 2114: main breakdowns

It would seem, what kind of damage can happen in a piece of plastic? But yes, they exist:

Cracks appear on the body, from which liquid leaks.
Violation of the integrity of the plug that regulates the pressure in the system.
Destruction of the thread on the neck and other damage.

As for the plug, everything is banal - the valves are clogged and excessive pressure is not released. Associated symptoms - the tank swells and becomes like a ball.

The worst thing that can happen is the fluid bubbling in the tank. This is a clear sign that there is a breakdown in the cylinder head gasket. But this is a separate story, which will be discussed in one of the following articles. Sometimes air pockets appear in the system. In this case, the stove does not work well, therefore, heat exchange does not occur correctly. It’s easy to get rid of air pockets - install the cap on the tank and warm up the engine to operating temperature. To be sure, crimp the long pipes with your hands.

What is this?

Or rather, what he looks like. The expansion tank is a container made of plastic. Liquid is poured inside it, which takes part in cooling the motor.

In addition to the hoses that are connected into a circuit, the tank design also includes a float sensor. With its help, information about the temperature of this liquid is transmitted to the car’s instrument panel inside the cabin.

This unit is located under the hood, on the driver's side. You can easily find it right behind the glass counter. Such placement cannot be called practical, since there is metal on all sides of the tank. Therefore, the metal does not allow the plastic to expand properly if the reservoir cap does not work properly.

The result is the same - the container bursts. This problem is especially relevant in the summer, when the car heats up not only from the engine, but also from active sunlight.

Repair or replace the tank?

Some drivers, having noticed that the expansion tank 2114 is leaking, try to repair the crack with glue or epoxy resin.

It should be noted right away that doing this is absolutely not worth it. After all, such repairs, as a rule, are short-lived, and with active use, even the most reliable adhesive seam can leak.

In addition, as already mentioned, the appearance of cracks in the tank is a sign of aging of the plastic caused by depolymerization - the volatilization of a number of fractions from the material that give it plasticity.

Thus, a plastic container that has already cracked can always crack again. That is why replacing the expansion tank of a VAZ 2114 is the most preferable option rather than repairing it.

As for the cover, it is also not repairable, and in case of malfunction it should be replaced with a similar one. At the same time, it is highly advisable to purchase the “native” cover for the 2114, and not its various analogues, the quality (and functionality) of which may be much worse.

If you could not find a cover for the 14th model, then instead you can purchase and install a cover for 2199, since they are completely interchangeable.

Buying Tips

Since the expansion tank for the VAZ 2114 is inexpensive, you should not save on its purchase. It is better to install a new original spare part . If you can’t find it, then you should give preference to parts from well-known manufacturers with a positive reputation. These include Togliatti, Master-M.

to inspect the spare part before purchasing . Even a new part may have defects. The tank must be made of high-strength plastic and have a certificate. It is better to make purchases in specialized stores. There is a higher probability of purchasing high-quality spare parts.

If you still want to save money, then you should consider used options. When choosing such a spare part, special attention must be paid to its condition . It is not recommended to take the tank from a car dismantling point.

To avoid such unpleasant consequences when purchasing online, you should adhere to the following recommendations:

Choose a proven and reliable organization.
Do not send money to the seller until you have received and inspected the part.
Require the provision of a warranty certificate (if we are talking about ordering a new spare part).
Give preference to those sellers who offer free shipping.

Replacing the expansion tank on a VAZ 2114 with your own hands

In a VAZ 2114 car, the expansion tank serves to remove heat from the power unit. It is noteworthy that these devices have approximately the same design on all AvtoVAZ vehicles. The differences are quite minor.

Photo of the expansion tank on a VAZ 2114

Over time, this unit also needs to be replaced. Therefore, today we will talk in more detail about the expansion tank, its characteristic malfunctions and the method of replacement.

Recommendations for selection

For VAZ 2110-12 models, you can find 2 types of expansion tanks on sale:

old model with two necks: the coolant level sensor is screwed into the first, and the second is closed with a plug with a release valve;

On old-style products, a second neck was made for installing an antifreeze level sensor

The new sample container does not have a level sensor

If your car has a sensor in an expansion tank, then you need to select an old-style product. Accordingly, versions without a sensor will require a new reservoir design.

For VAZ 2114-15 models, tanks of the same shape are offered with 3 fittings: two of them are located at one end, and the third is located at the opposite end. Products for the VAZ 2110 and 2114 are not interchangeable with each other, although if you really want to, attaching a part from another model is quite possible. Another thing is that there is no need for this - both varieties are available for free sale and practically do not differ in price.

The reservoir for models 2114-15 has a wider shape and a versatile arrangement of fittings

When purchasing an expansion tank for any series of cars of the “tenth” family, pay attention to the following points:

the plastic of a quality product should be light and half transparent;
cracks in the corners or near the fittings are unacceptable;
the plastic should not be “oaky” or have dark impurities visible to the naked eye;
look on the body for an imprint of the manufacturer's trademark and catalog number (21083–1311014 for VAZ 2114).

For all modifications “ten”, “fourteen” and “fifteen” a small tuning is available - installation of an expansion tank from the cooling system of a Lada Priora car. Why and how this is implemented will be discussed below.

The reservoir of the Priora cooling system has a rectangular shape and 3 fittings on the front wall

Video: how to distinguish an original spare part

Causes of failure of tanks VAZ 21102115

Car expansion tank cap

The service life of this element is not limited by regulations. This means that the container should be changed as needed, and this occurs quite often. The most common reason for replacement is damage to the integrity of the plastic case during operation. The tank simply bursts and here's why:

Clogged or damaged lid valve.
The steam coming from the radiators increases the pressure inside the tank because it cannot escape through the plug. As a result, the wall of the container is destroyed. Damage to the plastic wall occurs due to excess pressure in the cooling system
In VAZ 2110-12 cars, the side walls of the vessel are closely adjacent to the body elements - the glass and the partition. As the antifreeze temperature and pressure in the system increase, the plastic has nowhere to swell, causing the body to burst along the seam at the end (usually in the lower corner).
In the event of a breakdown of the gasket between the cylinder head and the engine block, the cooling system is subjected to a series of water hammers created by the movement of the pistons. The plastic case also often bursts from such an impact.
The reason may be the expansion tank itself, made from low-quality raw materials or in violation of plastic molding technology.
On low-quality products, cracks may appear 3-6 months after the start of use.

To avoid destruction of the expansion tank, it is recommended to check the functionality of the plug valve before each long trip. Practice shows that problems with the tank most often arise on the road, when it is hot outside, that is, in the summer. A sign of a malfunction is a sharp increase in coolant temperature and a puddle under the engine compartment on the driver’s side.

Experienced drivers advise replacing the standard tank cap with the cap from previous VAZ 2109-099 models. They are much more reliable in operation and fit the thread. Just keep one thing in mind: in some car configurations the plug is equipped with an antifreeze level sensor. After such a replacement, you will not be able to control it, although this will not affect the performance of the cooling circuit.

Coolant tank replacement process

General view of the expansion tank

The expansion tank not only serves as an indicator of the amount of coolant in the system, but also when the “coolant” boils, it will come out through it. Usually the latter reason is the reason for depressurization in the system and the appearance of cracks.

In order to make the replacement you will need certain tools. So, what is needed to complete the process:

Keys for 7 and 10.
Screwdriver.
Pliers.
New tank.
Sandpaper.

Now that everything you need has been collected, you can proceed directly to the process itself. So, let's consider the sequence of actions aimed at replacing the expansion tank:

remove “casting” defects

Cleaned cavity of the expansion tank under the pipe

Unscrew the valve and remove it from the tank

Removing the expansion tank

We connect the pipe for exhausting evaporative gases

We check the coolant pipe for leaks and integrity

We connect the pipe and install the expansion tank in place

Choice

21083-1311014 – original catalog number of the expansion tank for the VAZ-2114 family of cars. The part is produced at the factory and has no analogues, but some car enthusiasts come up with modifications to this unit or tuning.

The average cost is 400-500 rubles.

Replacing the expansion tank

If there are obvious signs of damage or coolant leaks on the expansion tank of the VAZ 2114, it needs to be replaced. You will need a new tank, plug and possibly pipes that fit into it - this depends on the condition of those installed on the car. Also the following tools and materials:

Sandpaper or file.
Wrenches for "7" and "10".
Screwdrivers and pliers.

First you need to do the preparatory work - using a file, remove all the burrs from the new tank. Unfortunately, they are cast very poorly and they look like they are unfinished. Make sure the surface is as smooth and even as possible. Pay special attention to the connections to the pipes.

Using a “10” wrench, unscrew the nuts securing the adsorber and move it aside. Now you can work on the antifreeze reservoir of the VAZ 2114. If you work according to the “book”, then you need to completely drain the liquid from the system. But we are always looking for the easy way out, so it’s worth thinking about it. The fact is that the antifreeze tank is the highest point of the system (you can even draw an analogy with heating a house). Therefore, it makes no sense to drain all the liquid. You can pump out the antifreeze using a pear, place a small basin underneath just in case, and get to work.

First, replace the upper tube, which is designed to drain excess antifreeze from the radiator. Then remove the lower pipe and try not to lower it. Install the tank and screw the adsorber into place. Fill in the antifreeze, its level should be close to 0, but you should not pour it higher. Look for any leaks. If there are any, tighten the clamps with a wrench (usually to “7”, but there is also a wrench to “8”).

Several acquaintances complained that the expansion tank on VAZ 2114, 2110, 2112 was breaking. A crack formed at the point of contact with the body, through which antifreeze oozed. Moreover, it was clear that it was leaking, but exactly where it was coming from was not clear until you removed the tank. And the new one lasted a couple of months. The solution is a small piece of rubber, for example, from a camera; it can be glued to the body with double-sided tape or even simply placed under it. And the service life of the expansion tank will increase.

Purchase of components

There are some helpful tips to follow when purchasing new parts to replace your expansion tank.

Buy the original. The original tanks are ideal for the “fourteenth” AvtoVAZ model. Therefore, various analogues are inappropriate here. The level of quality and efficiency of the original is much higher.
If a cover is required, then use the analogue from model 2199. They are fully compatible even with threads. Plus, the practice of VAZ 2114 owners shows that the “nine” cover works better than the original one.

COOLING SYSTEM VAZ 2114

Once upon a time, back in Soviet times, water was poured into a car radiator as coolant. But it was very inconvenient - in cold weather it had to be drained regularly so as not to defrost the system, and in the morning before the trip I had to run around with buckets of hot water. In addition, the cooling jacket in the cylinder block and in the cylinder head suffered from corrosion. Nowadays, water is practically no longer used; antifreeze or antifreeze is poured into the cooling system (CO).

The volume of VAZ 2114 coolant in CO is about 8 liters (7.8 liters according to factory conditions). A car that has rolled off the assembly line can be filled with any coolant; the manufacturer does not adhere to any specific rules in this matter.

But if the fluid runs out or the time has come to replace it, then topping up or replacing is necessary. And here you need to know what is poured into the system, and whether it is possible to mix antifreeze with antifreeze.

ANTIFREEZE

The name "antifreeze" contains Greek and English roots. The Greek “anti” means “against”, the English “freeze” translates to “freeze”. Therefore, the coolant located in the cooling system must not only prevent overheating of the internal combustion engine, but also not freeze in frosty weather. The basis of antifreeze is ethylene glycol, and the freezing point of the coolant depends on how much water is added to the chemical composition. The fluid components do not cause corrosion of engine parts.

The composition can be of almost any color; ethylene glycol itself is colorless. The composition is painted so that it can be seen in case of leakage, and so that it is not drunk by mistake; the antifreeze itself is poisonous. In addition, the old coolant changes color, which means it is time to replace it.

Antifreeze

Antifreeze is a type of antifreeze, only at one time it was specially developed for VAZ cars. It is blue in color and can be concentrated, diluted 60% with water (grade A-40M), diluted 35% (A-65M). The concentrate is not used in its pure form; it is diluted at your discretion, depending on the freezing temperature that is oriented towards in the region where the car is located. Antifreeze has a more aggressive environment, but this does not mean that it is of low quality.

MYTHS ABOUT ANTIFREEZE AND ANTIFREEZE

Antifreeze is worse than antifreeze. This is not true. Both coolants are made from the same base (ethylene glycol). But their density is different, and different instruments (hydrometers) are used to measure this parameter.
The color of a liquid is an indicator of quality, and its composition depends on the color. In fact, the composition of the coolant is basically similar for all, and does not depend in any way on the color. Antifreeze is mainly tinted green and red.