Why does the VAZ 2110 8-valve injector get hot - the reason

Insufficient coolant level

In the expansion tank of your car, the level of coolant should be almost equal to the half of the tank. If you look at the mark, it turns out to be the top mark on the tank body with the MAX mark. If there is no such mark, then most likely it will be located along the upper edge of the clamp.

If necessary, add antifreeze or antifreeze to the required level. It is worth noting another fact that in winter, if its level is insufficient, the stove may not work efficiently, that is, the air will not blow as hot as during normal operation of the heater.

Other reasons

In addition, engine overheating and antifreeze boiling can be caused by more serious breakdowns:

1. Fluid leaking through the head gasket . An unpleasant situation is when, when the gasket burns out, the liquid goes straight into the lubrication system or into the combustion chamber. At the same time, we do not observe any traces of a leak, but the antifreeze level is rapidly dropping, the engine is heating up, and the liquid is boiling. The main symptom is the smell of exhaust gases from the expansion tank or traces of antifreeze on the oil dipstick and on the oil filler plug. There is only one way out - replacing the gasket, changing the oil and filter, flushing the engine and replacing antifreeze.

Malfunction of temperature sensor and radiator cooling fan

Another reason why the VAZ 2110-2112 engine can get very hot is the failure of the cooling fan or sensor, which is again responsible for its operation.

Let's look at both of these cases in more detail.

1. If the temperature sensor is faulty, then when the temperature threshold for turning on the fan is reached, it simply will not work and at this moment the engine temperature will begin to rapidly creep up. This usually happens in traffic jams, and it is not possible to quickly reset T to normal. And in this case, antifreeze or antifreeze may even boil, and the engine will overheat, which absolutely should not be allowed. Try to drive onto a more or less clear section of the road to gain speed, and then you need to apply engine braking to quickly lower the temperature.
2. As for the malfunction of the fan itself, in principle, all the symptoms described will be here, only solving the problem will cost a little more, since the cost of a new fan motor is at least 600 rubles without the housing.

Main causes of overheating

The classic cooling scheme consists of a large and small circuit through which antifreeze circulates. The thermostat performs a regulatory function, directing the liquid in the desired circle. It is cooled in a radiator made of aluminum. The fan built into the system turns on while the car is running at low speeds, helping to maintain the required degrees.

When the engine of a VAZ 2110 gets hot, the reason lies in the following malfunctions:

• The thermostat is malfunctioning;
• the fan has failed;
• an air lock has formed in the cooling system;
• insufficient coolant level;
• antifreeze boiling;
• dirty engine.

Each of these reasons can become the main reason why the VAZ 2110 engine begins to overheat. As a result, the car loses power.

Thermostat malfunction

If the VAZ 2110 8-valve injector heats up, the reason may lie in a faulty thermostat. The unit is jamming. As a result, the circulation of liquid stops at any temperature. Often such a breakdown is caused by the fact that the VAZ 2110 car heats up for a long time at idle. The time of such warming up should not exceed 10 minutes. It is allowed to drive the car immediately after turning it on, provided that the first few km it is given a gentle mode.

Thermostat: 1-bypass valve; 2-outlet pipe (to the pump); 3-main valve spring; 4-main valve; 5-piston holder; 6-piston; 7-inlet pipe (from the radiator); 8-rubber insert; 9-solid heat-sensitive filler; 10-bypass valve spring; 11-inlet pipe (from the engine).

The thermostat can be checked directly on the engine. The operating procedure is as follows:

1. The engine starts.
2. The instrument needle begins to move upward.
3. The radiator pipes located under the hood, top and bottom are checked. If the lower one becomes warm before the gauge needle starts moving, it means the thermostat is stuck in the open position. When it is permanently closed, the bottom pipe remains cold at any temperature.

You can also check the thermostat by dismantling it and understand why the VAZ 2110 8 valve engine heats up . To do this, the device is removed from the engine and placed in a container of water. This could be any saucepan that is placed on the fire. After the liquid boils, the valve should open. If this does not happen, then the unit is jammed. It cannot be repaired. It needs to be replaced.

Fan problem

If the VAZ 2110 8-valve injector heats up, the reason may lie in a non-working fan. This is a car component whose function is to cool the liquid in the radiator. The signal to turn on the electric motor is supplied by the sensor. This happens when the temperature exceeds the permissible threshold.

If the fan fails, then the VAZ 2110 with an injector begins to heat up for the following reasons:

1. The thermostat valve is stuck. The coolant will constantly circulate only in a small circle, without entering a large one. Antifreeze will stop flowing into the radiator and will not reach the temperature sensor. As a result, the antifreeze will begin to boil.
2. When the VAZ 2110 engine starts to heat up quickly, the reason may lie in a faulty fan drive itself. For testing purposes, it is connected directly to the battery. If it does not turn on, it means the drive needs repair.
3. Before you start checking the drive, you need to inspect the fuse. His brand is F-7. The operation of the element is checked with a multimeter. The burnt out part is replaced with a new one.
4. Fan relay failure. To get to it, you need to remove the center console cover in the installation compartment. The cooling relay is located on the left edge. It can only be checked by installing a new element. Then the VAZ engine warms up and the new part is monitored.
5. A wiring break causes the fan to turn off. The break point is located using a tester. A new wire is being laid in this area.

Air lock in the cooling system

When antifreeze boils in the expansion tank of a VAZ 2110, the reason may be an air lock.

VAZ-2110 engine cooling system (with carburetor): 1 — heater radiator; 2 — steam removal hose of the heater radiator; 3 — outlet hose; 4 — supply hose; 5 — coolant temperature sensor (in the block head); 6 — pump supply pipe hose; 7 — thermostat; 8 — filling hose; 9 — expansion tank plug; 10 — coolant level indicator sensor; 11 — expansion tank; 12 — exhaust pipe; 13 — liquid chamber of the carburetor starting device; 14 — radiator outlet hose; 15 — radiator supply hose; 16 — radiator steam hose; 17- left radiator tank; 18 — sensor for turning on the electric fan; 19 — fan electric motor; 20 — electric fan impeller; 21 — right radiator tank; 22 - drain plug; 23 — electric fan casing; 24 — timing belt; 25 — coolant pump impeller; 26 — supply pipe of the coolant pump; 27 — supply hose to the liquid chamber of the carburetor starter; 28 - outlet hose.

Common Causes

As you know, the VAZ 2110 is equipped with two types of engines - with 8 and 16 valves. There are several main, most common reasons that cause this overheating of power units.

Let's look at each of the reasons and ways to resolve these problems separately.

Tens engine

Low coolant level

Coolant plays a huge role in the operation of the cooling system. A special substance, namely antifreeze or antifreeze, is poured into the expansion tank.

Related material:

In a normal situation, the level of the coolant solution should be at the level of, or rather the MAX marks on the tank body. This indicates that the container is approximately 50-60 percent full.

If there is no such mark on the tank, refer to the clamp. The liquid should reach its upper edge.

1. If the engine overheats, try simply adding the missing amount of coolant so that it is at the optimal filling level.
2. If you have not changed the coolant for a long time, it is better not to add new coolant, but simply replace it completely with new coolant.
3. When choosing between antifreeze and antifreeze, most VAZ 2110 owners prefer the first. And mainly due to the financial availability of antifreeze. But in practice, antifreeze is better . One of its most important advantages is that the substance does not freeze in severe frosts. For individual regions of our country, this is a key factor in the choice of coolant.

At what temperature does antifreeze boil?

The boiling point of coolant varies from 85 to 120 degrees Celsius. It all depends on its composition and air access. But in any case, the expression “coolant is boiling” raises a lot of questions. How does it boil if it is intended to lower the engine temperature? This, of course, should not be the case, so the problem requires careful investigation.

If antifreeze boils in the radiator, then most likely the pump, which should provide forced circulation, has failed. When normal circulation does not occur, the coolant stagnates and does not have time to cool, which leads to its boiling. In this case, you must immediately repair the pump or replace it with a working model. Otherwise, you can get serious problems with the motor.

If the antifreeze is boiling and the radiator is cold, then this is a sign of the presence of an air lock in the system, which interferes with the normal passage of antifreeze. The most reliable way to solve the problem is to purge the system using special equipment. There are also other methods that drivers come up with themselves. But they do not guarantee a positive result, but can lead to new problems.

Antifreeze can boil even if all elements of the cooling system are in full working order. The fact is that during operation it changes its original chemical composition due to objective reasons. And a change in composition leads to a change in chemical properties. Therefore, the coolant may boil because its service life has expired and needs to be replaced with a new substance.

It may also be that the chosen brand is simply not suitable for the cooling system installed on the car. In this case, all that remains is to advise the driver to carefully select components for his vehicle. Before purchasing, you should study all the manufacturer’s technical recommendations so that the store knows exactly what you need. Just in case, you can also check with your sales consultant.

Antifreeze boiling in a VAZ 2110 is not such a rare problem. Most often it is caused by the fact that the original expansion tank caps do not fit well with the neck and need to be modified or replaced. If the driver notices that a new car immediately has problems with the cooling system, you need to contact the car dealership so that they can fix everything under warranty, without additional payment.

You should not change anything yourself, so that the car will not be removed from the warranty. When buying a used model, you need to test it in action, even if everything looks perfect, problems may appear in operation, and the car will no longer be worth its money.

Why does antifreeze boil in the expansion tank?

The process of boiling coolant in most cases is associated with insufficient pressure in the system. This problem, in turn, is often caused by insufficient sealing of the tank lid. If it does not fit tightly to the neck, then air leakage will occur from under it, which will cause the antifreeze to boil. To get rid of this problem, you need to either replace the lid or sand the neck to create a perfectly smooth surface.

The problem may also be related to microcracks in the cooling system hoses. If the tightness of the lid is beyond doubt, then the hoses must be checked. Most often, cracks occur in places where fixing clamps are installed. It is worth considering that you can see them only after removal, so you will have to disassemble the entire system and check each hose individually. Many cuts are so minor that they can only be noticed on a bent hose.

If the antifreeze boils at 90 degrees, then there may be a malfunction in the thermostat. When an element fails, the cooling system valve does not open and fluid does not circulate through it. This can also cause it to boil. The solution to the problem is to simply replace the thermostat. After this, the cooling system will return to its normal operating process.

Many drivers encounter a problem when antifreeze boils after stopping the engine. This phenomenon can have a huge number of reasons, so you can understand the problem only by checking various elements. The problem could be anything from poor coolant quality to an air lock in the system. If you cannot find a solution on your own, it is better to contact a service station for a full diagnosis.

Replacing the cooling system pipes of a VAZ 2110

In fact, the cooling system pipes on a VAZ 2110 car cannot be called strong, reliable and durable elements. Over time, they can wear out and lose their effectiveness. Therefore, the only thing left for the car owner is to replace them.

Rubber tubes for CO

Today we will tell you how to remove and replace these elements. You must act strictly in accordance with the operating instructions and observe all safety precautions. This will allow you to protect yourself and your car from unnecessary troubles.

Nuances of antifreeze

There are many opinions as to whether antifreeze is actually better than antifreeze. We will not prove our position, but rather we will tell you a few facts.

First of all, antifreeze is essentially antifreeze. It’s just that it was created during the Soviet Union. In terms of its characteristics, antifreeze is in many ways superior to foreign analogues.

Why is it better to use antifreeze when replacing coolant in a VAZ 2110? The choice is always up to the car owner, but this particular coolant has a wide range of advantages:

• When heated, the degree of expansion of antifreeze is less than that of water. Therefore, the presence of even a small gap for expansion will allow it to protect the system from rupture and maintain the integrity of the pipes and caps of the expansion tank;
• The boiling point is higher than that of water;
• At sub-zero temperatures, the coolant does not turn into ice and acquires a gel-like structure, which does not lead to rupture of the cooling system (CO);
• Does not form foam;
• Does not cause corrosion. Moreover, it has the function of preventing its occurrence.

The engine of a VAZ 2110 is overheating and what should I do?

VAZ 2110 marked the beginning of a whole family of cars. Some of them are still in production today. This model range is characterized by high reliability and relative simplicity of execution, which is one of the main reasons for the high popularity of the car. However, long-term operation has revealed a number of significant shortcomings. One of them is the cooling system.

It works great on a relatively new car, however, as soon as the service life exceeds 10 years, malfunctions appear in its operation. They ultimately manifest themselves in the same way. The arrow of the device indicating the temperature invariably creeps up. There may be several reasons why the VAZ 2110 engine heats up, and this problem requires detailed consideration.