Air lock in the car cooling system

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42

The article will talk about what an air lock is in the cooling system of an internal combustion engine. But first you need to decide what a cooling system is, with its purpose, as well as its composition. During the operation of an internal combustion engine, even gasoline, even diesel, heating occurs. The temperature of the oil, the cylinder block rises, as an explosion of the fuel-air mixture occurs in the combustion chambers with the release of heat. To date, most engines that are installed on passenger cars have a liquid cooling system. In fact, this is a hybrid system, since the oncoming air flow or the one created by the fan impeller participates in the process of cooling the radiator.

Functions of the cooling system

With the help of the cooling system, the car interior is heated. The heating system is included in the cooling circuit. Thanks to the cooling systemthere is a decrease in the oil temperature in the internal combustion engine. And if an air lock appears in the VAZ-2110 cooling system, all work is disrupted. There is also a decrease in the temperature in the combustion chambers. It is very difficult to single out the main one among all the elements, since everything, even the smallest details, affect the efficient operation of all systems. But still it is worth noting the cooling radiator, which is installed in the front of the car so that it gets oncoming air flow. With its help, there is a significant decrease in the temperature of the liquid that circulates through the system.

Design elements

Due to the design of the heatsink, the temperature reduction efficiency is improved. On all modern cars, an electric fan is installed on the radiator, which is turned on using a sensor. This device does not work constantly, but only when the permissible temperature level is excessively exceeded. But it does not function properly if an air lock appears in the cooling system. Kalina has the same cooling system design as most VAZ front-wheel drive cars. On some machines, impellers with forced rotation were previously installed. In particular, such devices were mounted on VAZ cars of the classic series. They were attached to the water pump rotor. Of course, without forced circulation, cooling will be very poor. For this purpose, a pump is provided in the design. With her help,pumping fluid in the desired direction. In total, there are two radiators in the system: one is installed in the passenger compartment, it is somewhat smaller, but it is enough to heat the air. The second, main, as already mentioned, is in front of the car.

Cooling circuits

An expansion tank is installed in the engine compartment. With its help, the volume of the coolant is compensated. During heating and cooling, this parameter constantly changes. On most vehicles, fluid must be filled into the expansion tank. If refueling is performed incorrectly, an air lock will appear in the VAZ-2109 cooling system. On almost all cars, the cooling system has two circuits that are switched using a special device - a thermostat. The design also includes pipes, tubes made of stainless materials, temperature sensors, which either turn on the forced airflow of the fan, or provide data on the operation of the engine to the electronic control unit and to the indicator located in the dashboard. How the engine will behave in all modes depends on the correct operation of these sensors.

What happens when it breaks down?

The most annoying malfunctions occur exclusively in the cooling system. This is a very finicky part of the whole car. In particular, air jams cause a lot of trouble. If there are, thenthe heating system is extremely inefficient, since practically no liquid is supplied to the stove radiator. There is also excessive heating of the engine, heat transfer is significantly impaired. Of course, excessive heating affects the efficiency of the engine, and most importantly, its resource. In the event that there is a plug, the sensors begin to show incorrect information, since sometimes they are not in a liquid, but in an air bubble. And if there is an air lock, it must be removed immediately.

Reasons for appearance

And now about why an air lock may appear in the cooling system of the VAZ-2114 and other cars. As a rule, air penetrates there if there is some kind of suction from the outside. For example, poor tightening of pipe clamps. Moreover, air is sucked in very strongly from the outside during the cold period of time. When the temperature is very low, the plastic or rubber shrinks, so poor tightening of the clamps causes a plug to form. Very often, on all front-wheel drive cars of the VAZ family, the cover, which is located on the expansion tank, breaks. It has two valves that maintain the required pressure in the system. Sometimes the pump fails, its tightness is broken. Cracks appear on the stove or cooling radiator, or there is a leak.

Serious reasons

In the event that the integrity of the gasket under the cylinder head is destroyed, air pockets will also appear. When the system is cloggedcooling, or if the thermostat fails, the impeller breaks on the pump, air also appears in the system. Therefore, before removal, it is necessary to identify the true cause. For this, a complete diagnosis is carried out, getting rid of blockages. Moreover, it is even desirable to flush the system, as well as replace all elements whose service life is coming to an end or has already passed. Inspect the thermostat carefully. If it has any damage or is clogged, it is better to install a new one. And stock up on coolant. After all, when getting rid of the cork, its level in the expansion tank decreases. And when an air lock is expelled in the Lada Kalina cooling system, you need to make sure that all the elements are in good condition.

How to get the air out?

As a rule, on front-wheel drive vehicles, and on all others, air begins to accumulate exclusively in the upper part of the entire system. The highest point is the throttle valve, namely the pipe that connects to it. On VAZ-2114 and similar vehicles, it is necessary to disconnect the pipe from the throttle assembly. And then you can go in two ways. Or start the engine and warm it up to operating temperature, while ensuring that coolant comes out of the throttle assembly pipe. But you can install an adapter for a conventional car pump instead of a plug on the expansion tank. With the help of it, pressure is created in the system, as a result of this, the liquid is squeezed out and it rises.to the upper edge of the pipe going to the throttle assembly. At the moment when the coolant starts to come out of this pipe, it is necessary to install it in place. After that, be sure to tighten the clamp well. How the air lock is expelled in the cooling system of the VAZ-2106 and the like will be described below.

Nuances to consider

Please note that if you are warming up the engine, trying to get rid of the air lock, you must protect yourself with long gloves so as not to get burned from the engine elements. But there is a more advanced way, only you can do it together. The car must be installed so that its front is much higher than the rear. Coolant is poured into the expansion tank to the maximum. Then you need to start the engine and warm it up. From time to time, you need to squeeze the gas pedal, increasing the speed to the value of "3500". When air stops coming out of the expansion tank, turn off the engine. This completes the pumping.

VAZ classic series

As for the classic series of cars, there should be a slightly different way to get rid of air congestion. It is desirable, of course, to install the car so that its front is higher than the rear. Only in this way can the air lock in the VAZ-2107 cooling system go away. This will maximize the filling of the stove radiator. Please note thatthat the faucet must be fully open. Liquid is poured into the expansion tank and into the radiator to the maximum level. Then the engine starts according to the principle given earlier, the speed increases from time to time. Only during pumping, it is necessary to make sure that the liquid has gone into the pipe leading to the throttle assembly. And also, putting on a glove, push through the long pipes going to the radiator. This will force the air out of the engine cooling system.