The temperature of gases in the cylinders of an internal combustion engine reaches 2500 ° C, and only a part of the released heat is converted into useful work. The remaining heat is removed to the environment through the cooling system, lubrication, and also the outer surfaces of the motor.
Thus, the key purpose of the car cooling system is to maintain the optimal temperature regime, which allows you to obtain maximum power, provides high efficiency and a long service life of the internal combustion engine. If the engine parts are not properly cooled, the power and efficiency of the engine will immediately decrease, the engine parts will be subject to more wear, and engine damage may occur. If it cools too much, it will also lose power, its efficiency will deteriorate, and the wear of mechanisms will increase.
Therefore, the health of the system is of great importance. If any problems arise, it may be necessary to repair the VAZ 2104 cooling system.
Malfunctions and root causes
First of all, it is necessary to consider the most common factors that lead to breakdowns, which will allow you to avoid repairs in the future.
- violation of operating rules (violation of the frequency of replacement of coolant, use of low-quality products);
- unskilled work on the maintenance and repair of the system;
- the use of low-quality components.
In addition, wear of system elements can lead to malfunctions, since any mechanisms and parts have their own maximum service life.
As for the first three points, if the owner observes the rules and recommendations, he will be able to extend the period of operation of his car.
The following malfunctions may occur in the cooling system:
- overheating or hypothermia,
- external or internal coolant leak,
- increased fluid loss,
- poor fluid circulation,
- corrosion.
If you check the fluid level yourself, it is necessary to carry out the procedure on a cold engine, because when heated, its volume increases, and the fluid level in a warmed-up engine can rise significantly.
It is best to contact a specialized and proven car service if you find any malfunctions. Masters of "Expo Car Service" are real professionals in their field and have been working with domestic and Chinese cars for more than a year. Car service specialists will carry out a high-quality repair of the faulty cooling system of the VAZ 2104, eliminating all the problems. For several years we have been providing our clients with professional service and car repairs at affordable prices. We regularly conduct various promotions and offer lucrative bonuses.
Parts of the carburetor engine cooling system: 1
- heater radiator; 2 - hose for removing coolant from the heater radiator; 3 - hose for supplying coolant to the heater tap; 4 - a pipe for removing the coolant from the cylinder head; 5 - bypass hose; 6 - expansion tank; 7 - connecting hose of the expansion tank; 8 - hose for supplying coolant to the radiator; 9 - radiator plug; 10 - radiator electric fan; 11 - radiator of the cooling system; 12 - sensor for turning on the electric fan; 13 - hose for draining the coolant from the radiator; 14 - coolant pump; 15 - hose for supplying coolant to the pump; 16 - thermostat; 17 - gauge for the coolant temperature gauge; 18 - hose for removing the coolant from the inlet pipeline; 19 - heater tap; 20 - a pipe for removing coolant from the heater radiatorThe cooling system maintains optimal thermal conditions of the engine by controlled heat removal from the hottest parts. The engine cooling system is a liquid, sealed type, with forced circulation of the coolant and an expansion tank.
Connected to the cooling system interior heater radiator car. The heated coolant from the cylinder head flows through a hose through an open tap to the heater radiator, and then (through the fluid drain pipe) to the coolant pump.
The coolant pump is centrifugal, driven by a V-belt drive from the crankshaft pulley. The pump consists of an aluminum alloy body and cover. The cover is secured with nuts to four studs screwed into the pump housing. A sealing gasket is installed between the body and the cover. The pump roller rotates in a double row sealed bearing. A flange of the pump drive pulley is pressed onto the front end of the roller, and a cast iron or plastic impeller is pressed onto the rear end.
Radiator - vertical, tubular-plate, with two plastic tanks and an aluminum core. The radiator is mounted on two rubber pads and is attached to the body with two bolts. The filler neck of the radiator is sealed with a plug and is connected with a hose to expansion tank. The radiator plug has an outlet (steam) valve, pressed by a spring against the seating collar of the filler neck, and an inlet valve through which the radiator is connected to the expansion tank. The inlet valve is not pressed against the seat and has a clearance of 0.5-1.1 mm, which allows the inlet and outlet of coolant to the expansion tank when heating or cooling. With a sharp increase in temperature or boiling of the liquid, the inlet valve does not have time to release the liquid into the expansion tank and closes, disconnecting the system from the expansion tank. When, due to further heating of the liquid, the pressure increases to 50 kPa, the outlet valve opens and part of the liquid begins to flow into the expansion tank. The expansion tank is closed with a plug with a rubber valve that maintains the pressure in the tank close to atmospheric.
The electric fan is installed behind the radiator. To reduce noise during operation, the fan impeller blades have a radially variable installation angle and pitch. The electric fan of the carburetor engine is turned on from a sensor screwed into the lower part of the right radiator tank. On cars of early production with constant forced ventilation, the fan switch and the electric fan were not installed. The fan impeller was attached to the coolant pump pulley and rotated constantly when the engine was running. On the injection engine, the electric fan is controlled by ECU commands (via a relay). The initial data for these commands is the signal from the coolant temperature sensor installed in the outlet pipe of the cooling system.
The cooling system thermostat serves to maintain the required thermal mode of the engine and accelerate its warming up. When the coolant temperature is below 80 ° C, the main thermostat valve is closed, and the bypass valve is open. The fluid circulates from the cooling jacket of the cylinder block through the thermostat bypass valve to the pump, which again feeds fluid into the cooling jacket, bypassing the radiator (small circle). This ensures that the engine warms up quickly. The temperature of the beginning of the opening of the main valve of the thermostat should be in the range of 80.6-81.5 ° C. The full stroke of the main valve must be at least 6 mm. When the liquid is heated above 94 ° C, the main thermostat valve opens completely, and the bypass closes. The fluid flows from the cooling jacket through the supply hose to the radiator. From the radiator, the liquid flows through the outlet hose through the main valve of the thermostat to the pump, which again supplies liquid to the cooling jacket (large circle). In the temperature range 80-94 ° C, the thermostat valves are in an intermediate position and the liquid circulates both in a small and a large circle. Regardless of the position of the thermostat valves, when the heater tap is open, the liquid always circulates through the heater radiator. In addition, fluid is constantly circulated through the intake manifold heater or throttle body (on an injection engine).
Parts of the cooling system of the injection engine
: 1 - heater radiator; 2 - hose for removing coolant from the heater radiator; 3 - hose for supplying coolant to the heater tap; 4 - hose for removing the coolant from the throttle body heating unit; 5 - sensor (control system) of coolant temperature; 6 - hose for supplying coolant to the throttle body heating unit; 7 - expansion tank; 8 - hose for supplying coolant to the radiator; 9 - connecting hose of the expansion tank; 10 - radiator plug; 11 - radiator of the cooling system; 12 - radiator electric fan; 13 - hose for draining the coolant from the radiator; 14 - coolant pump; 15 - hose for supplying coolant to the pump; 16 - thermostat; 17 - bypass hose; 18 - gauge for the coolant temperature gauge; 19 - a pipe for removing the coolant from the cylinder head; 20 - heater tap; 21 - a pipe for removing coolant from the heater radiatorThe cooling system (CO) of engines of cars VAZ 2105, 2107 is designed to maintain their required operating temperature. The image above is a diagram of it.
The main elements of the engine cooling system of cars VAZ 2105, 2107
- Engine cooling jacket
Cavities around the engine cylinders, in the block head and the intake manifold, through which coolant (coolant) circulates, removing excess heat from them.
- Pump (water pump)
Designed to provide forced circulation of liquid through the cooling system. It is a shaft with an impeller rotating on a bearing in an aluminum housing. It is driven by a belt drive from the generator pulley and crankshaft. It is recommended to periodically check the belt tension, since when it slips, the pump cannot provide effective coolant circulation and the engine will run out. The deflection of the belt under a force of 10 kgf should be within 10-15 mm.
- Radiator
Designed to cool the liquid when the vehicle is moving. Consists of two tanks and two rows of pipes connecting the tanks. Has a plug with inlet and outlet valves on the filler neck. The outlet valve opens when the fluid is very hot and the pressure in the system rises. In this case, part of the liquid through it is thrown into the expansion tank.
- Expansion tank
Designed to remove highly heated and pressurized coolant from the main system. Has a plug on the filler neck. There is a valve in the plug that opens when the pressure in the system is exceeded.
- Thermostat
The thermostat is designed to maintain the normal temperature of the engine by connecting or disconnecting the small and large circles of the cooling system. On a cold engine, coolant circulates in a small circle (pump, block head, cylinder block, stove, upper part of the thermostat). Its temperature rises rapidly. After heating the coolant to 80 gr. the thermocouple of the thermostat is triggered, opening its bypass valve. The liquid begins to flow through the lower part of the thermostat into the radiator (large circle), where it cools somewhat. The normal and efficient operation of the engine cooling system as a whole depends on the serviceability of the thermostat.
- Cooling fan
With a four-blade impeller combined with an electric motor. Installed on the radiator. Designed for forced cooling of the liquid passing through the radiator. It turns on when the temperature sensor (TM-108), installed in the lower radiator tank, on the left, is triggered. Closing its contacts at a coolant temperature above 89-95 gr., Opening at 84-90 gr.
- Stove (interior heater radiator)
Designed to heat the car interior. It is part of the small circle of the cooling system, so it warms up first. Has a tap that blocks the fluid circulating through it. The crane is operated by a lever from the passenger compartment.
- Connections and hoses
Designed to circulate coolant through the system.
To control the temperature state of the engine by the driver, the instrument panel has a coolant temperature pointer connected to a temperature sensor screwed into the engine cylinder head.
Notes and additions
- The operating temperature of the engine, maintained by its cooling system, is in the range of 80-94 gr.
- When the engine is cold, always check the coolant level. The temperature of the engine and, accordingly, the correctness of its operation directly depends on its volume. At an air temperature of 18-20 gr. the coolant level must be 4 cm above the MIN mark in the expansion tank.
- The frequency of replacement of the coolant on the engines of VAZ 2105, 2107 vehicles is 30,000 km.
Engine cooling VAZ 2104, 2105, 2107
Cooling of the engine VAZ 2104, 2105, 2107: 1. A pipe for draining fluid from the heater radiator to the coolant pump; 2. Hose for removing the coolant from the inlet pipe; 3. Hose for drainage of coolant from the heater radiator; 4. Hose for supplying fluid to the heater radiator; 5. Thermostat bypass hose; 6. Outlet branch pipe of the cooling jacket; 7. Radiator supply hose; 8. Expansion tank; 9. Tank cap; 10. Hose from the radiator to the expansion tank; 11. Radiator cap; 12. Plug outlet valve; 13. Inlet valve; 14. Upper radiator tank; 15. Filler neck of the radiator; 16. Radiator tube; 17. Radiator cooling plates; 18. Fan casing; 19. Electric fan; 20. Pulley for the drive of the coolant pump; 21. Rubber support; 22. Window on the side of the cylinder block for supplying coolant; 23. Oil seal holder; 24. Coolant pump roller bearing; 25. Pump cover; 26. Hub of the pump drive pulley; 27. Pump roller; 28. Locking screw; 29. Oil seal collar; 30. Pump casing; 31. Pump impeller; 32. Pump inlet pipe; 33. Lower radiator tank; 34. Outlet radiator hose; 35. Coolant pump drive belt; 36. Coolant pump; 37. Hose for supplying coolant to the pump; 38. Thermostat; 39. Rubber insert; 40. Inlet pipe (from the radiator); 41. Main valve; 42. Bypass valve; 43. Thermostat housing; 44. Branch pipe of the bypass hose; 45. Branch pipe of a hose for supplying coolant to the pump; 46. Thermostat cover; 47. Piston of the working element; 48. I. Scheme of thermostat operation; 49. II. The temperature of the liquid is less than 80 C; 50. III. Liquid temperature 80 - 94 C; 51. IV. The liquid temperature is more than 94 C. The engine cooling system is liquid, closed type, with forced circulation of liquid. The system capacity is 9.85 liters, including the body heating system. The cooling system consists of the following elements: a coolant pump 36, a radiator, an expansion tank 8, pipes and hoses, an electric fan 19, block cooling jackets and a cylinder head.
When the engine is running, the liquid heated in the cooling jackets enters through the outlet 6 through hoses 5 and 7 into the radiator or thermostat, depending on the position of the thermostat valves. Next, the coolant is sucked in by the pump 36 and supplied again to the cooling jacket. The engine cooling system is liquid, closed type, with forced circulation of liquid. The system capacity is 9.85 liters, including the body heating system. The cooling system consists of the following elements: a coolant pump 36, a radiator, an expansion tank 8, pipes and hoses, a fan 19, block cooling jackets and a cylinder head.
When the engine is running, the liquid heated in the cooling jackets enters through the outlet 6 through hoses 5 and 7 into the radiator or thermostat, depending on the position of the thermostat valves. Next, the coolant is sucked in by the pump 36 and supplied again to the cooling jacket. Checking the coolant level is carried out on a cold engine (at a temperature of plus 15-20 C) by the level of the liquid in the expansion tank 8, which should be 3-4 mm above the "MIN" mark. To monitor the coolant temperature, there is a sensor installed in the cylinder head and an indicator on the instrument panel.
Under normal temperature conditions of the engine operation, the pointer arrow is at the beginning of the red field of the scale within 80-100 C. liquid, thermostat or electric fan malfunction), as well as difficult road conditions.
The fluid from the system is drained through the drain holes closed with plugs: one is in the left corner of the lower radiator tank 33, the other is in the cylinder block to the left in the direction of the vehicle. The car's interior heater is connected to the cooling system. The heated fluid from the cylinder head enters through hose 4 through the tap into the heater radiator, and is sucked off by pump 36 through hose 3 and pipe 1.
The coolant pump is a centrifugal type, driven from the crankshaft pulley by a V-belt to drive the generator. The pump is attached to the cylinder block on the right side through a gasket. The body 30 and cover 25 of the pump are cast from an aluminum alloy. A roller 27 is installed in the bearing cover 24, which is locked by a screw 28. The bearing 24 is two-row, non-separable, without an inner cage. The bearing is filled with grease during assembly and is not relubricated. On the roller 27, on one side, an impeller 31 is pressed, and on the other, the hub 26 of the pump drive pulley.
The end of the impeller, in contact with the sealing ring, is hardened by high-frequency currents to a depth of 3 mm. The O-ring is pressed against the impeller by a spring through a rubber cuff 29. The oil seal is non-separable, consists of an outer brass cage 23, a rubber cuff and a spring. It is pressed into the pump cover 25. The pump housing has an inlet 32 and a window 22 towards the cylinder block for pumping coolant. With normal tension of the pump drive belt, its deflection under a force of 10 kgf should be within 10-15 mm.
Electric fan. The fan is four-bladed, made of plastic. The fan blades have a radially variable installation angle and, to reduce noise, a variable step along the hub. The fan is installed on the motor shaft and pressed with a nut. For better efficiency, the fan is housed in a casing 18, which is bolted to the radiator brackets. The electric motor assembly with the fan is mounted on three rubber bushings and is fastened with nuts to the studs of the fan casing 18. The switching on and off of the electric fan 19 is carried out automatically depending on the temperature of the liquid using a sensor of the TM-108 type installed in the lower radiator tank on the left side. The closing temperature of the sensor contacts should be in the range of 89-95 C, and the opening temperature in the range of 84-90 C.
Radiator. A radiator with upper and lower tanks, with two rows of vertical brass tubes and tin-plated cooling plates, is fastened with four bolts to the front end of the body and rests on rubber supports 21. The filler neck 15 of the radiator is closed with a stopper I and is connected with a hose 10 with a translucent plastic expansion tank 8. Radiator cap has an inlet valve 13 and an outlet valve 12, through which the radiator is connected with a hose to the expansion tank.
The inlet valve is not pressed against the gasket (clearance 0.5-1.1 mm) and allows the inlet and outlet of coolant to the expansion tank when the engine is heated and cooled. Since 1988, vehicles have been fitted with radiators with an aluminum core and plastic tanks. Thermostat and cooling system operation. The cooling system thermostat accelerates engine warm-up and maintains the required engine thermal mode. Under optimal thermal conditions, the coolant temperature should be 85 - 95 C. Thermostat 38 consists of a body 43 and a cover 46, which are sealed together with the seat of the main valve 41.
The thermostat has an inlet 40 for the inlet of cooled liquid from the radiator, a branch 44 of the bypass hose 5 for bypassing fluid from the cylinder head to the thermostat and a branch 45 for supplying coolant to the pump 36. The main valve is installed in a thermoelement cup, in which a rubber insert 39 is sealed. The rubber insert contains a polished steel piston 47, which is fixed to a stationary holder. A thermosensitive solid filler is placed between the walls and the rubber insert. The main valve 41 is pressed against the seat by a spring. On the valve, two posts are fixed, on which a bypass valve 42 is installed, which is pressed by a spring.
The cooling system is designedto maintain normal thermal conditions of the engine.When the engine is running, the temperature in its cylinders rises above 2000 degrees, and the average is 800 - 900 ° C! If you do not remove heat from the "body" of the engine, then in a few tens of seconds after starting, it will no longer be cold, but hopelessly hot. The next time you can start your cold engine only after a major overhaul.
The cooling system is needed to remove heat from the mechanisms and engine parts, but this is only half of its purpose, although more than half. To ensure a normal working process, it is also important to accelerate the warm-up of a cold engine. And this is the second part of the cooling system.
As a rule, a closed-type liquid cooling system with forced circulation of liquid and an expansion tank is used (Fig. 25).
The cooling system consists of:
- cooling jacket of the block and cylinder head,
- centrifugal pump,
- thermostat,
- radiator with expansion tank,
- fan,
- connecting pipes and hoses.
To monitor the operation of the system, there is a coolant temperature indicator on the instrument panel. The normal temperature of the coolant when the engine is running should be within the range of 80-90 ° C (see Fig. 63).
I run the risk of receiving judgmental words in my address, but let's imagine that a running engine is still a living organism. The temperature of any living organism is a constant value, and any change in it leads to unpleasant consequences. The same thing happens with the engine, it will not be able to work normally if its thermal regime is not correct.
Engine cooling jacketconsists of many channels in the block and the cylinder head through which coolant circulates.
Centrifugal pumpforces fluid to move through the engine cooling jacket and the entire system. The pump is driven by a belt drive from the engine crankshaft pulley. The belt tension is regulated by the deflection of the generator housing (see Fig.59a) or the tension roller of the engine camshaft drive (see Fig.11b).
Thermostatdesigned to maintain a constant optimal thermal condition of the engine. When starting a cold engine, the thermostat is closed, and all the liquid circulates only in a small circle (Fig. 25) to warm it up as soon as possible. When the temperature in the cooling system rises above 80 - 85 ° C, the thermostat automatically opens and part of the liquid enters the radiator for cooling. At high temperatures, the thermostat opens completely and already all the hot liquid is directed along a large circle for its active cooling.
Radiatorserves to cool the liquid passing through it due to the air flow that is created when the car is moving or with the help of a fan. The heatsink contains many tubes and "membranes" that form a large cooling surface area.
Well, everyone knows a common example of a car radiator. Each house has central or local heating radiators (batteries). They also have a special configuration, and the larger the total area of the complex surface of the radiator, the warmer it is in your house. And at this time, the water in the heating system is actively cooled, that is, it gives off heat.
Expansion tankit is necessary to compensate for changes in the volume and pressure of the coolant when it is heated and cooled.
Fanis designed to forcibly increase the air flow passing through the radiator of a moving car, as well as to create an air flow when the car is stationary with the engine running.
Two types of fans are used: a permanently on, belt-driven crankshaft pulley and an electric fan that turns on automatically when the coolant temperature reaches approximately 100 degrees.
Connections and hosesserve to connect the engine cooling jacket to the thermostat, pump, radiator and expansion tank.
The engine cooling system also includesinterior heater.Hot coolant flows throughheater radiatorand heats the air supplied to the vehicle interior. The air temperature in the passenger compartment is regulated by a special tap, with which the driver adds or decreases the flow of fluid passing through the heater radiator.
The main malfunctions of the cooling system.
Leakage of coolant may appear due to damage to the radiator, hoses, gaskets and oil seals.
To eliminate the malfunction, it is necessary to tighten the clamps for fastening hoses and pipes, and replace the damaged parts with new ones. In case of damage to the radiator pipes, you can try to "patch" holes and cracks, but, as a rule, everything ends up replacing the radiator.
Overheating of the engine can occur due to insufficient coolant level, weak fan belt tension, clogged radiator pipes, or if the thermostat is malfunctioning.
To eliminate the malfunction, restore the liquid level in the cooling system, adjust the fan belt tension, flush the radiator, and replace the thermostat.
Often, overheating of the engine also occurs with serviceable elements of the cooling system, when the machine is moving at low speed and high loads on the engine. This happens when driving in difficult road conditions, such as country roads and boring city traffic jams. In these cases, you should think about the engine of your car, and about yourself too, arranging periodic, at least short-term "respites".
Be careful while driving and do not allow emergency operation of the engine!
Remember that even one-time engine overheating violates the metal structure, thus significantly reducing the lifespan of the "heart" of the car.
Cooling system operation.
When operating the vehicle, you should periodically look under the hood. Even if you are a philologist by education and have not hammered a single nail in this life, you can still see something and take timely measures to prolong the life of your car.
If coolant level in the expansion tank has dropped or the liquid is absent altogether, then first you need to top it up, and then figure it out (on your own or with the help of a specialist) with where it went.
During the operation of the engine, the liquid heats up to a temperature close to the boiling point, which means that the water in its composition will gradually evaporate. If after six months of daily operation of the car, the level in the tank has dropped slightly, then this is normal. But if yesterday there was a full tank, and today it is only at the bottom, then you need to look for the place of the coolant leak.
Leakage of fluid from the system can be easily identified by dark spots on the asphalt or snow after more or less long parking. Once the hood is opened, you can easily locate the leak by comparing the wet marks on the pavement with the location of the cooling system elements under the hood.
It is necessary to control the liquid level in the tank at least once a week and if there are leaks, then it is necessary to top up, find and eliminate the cause of the decrease in the level. In other words, you need to put in order the cooling system of your engine. Otherwise, he may become seriously "ill" and require "hospitalization".
Almost all domestic cars use a special low-freezing liquid called TOCOL A-40 as a coolant. The figure (minus 40o indicates the temperature at which the liquid begins to freeze (crystallize). In the conditions of the far north, it is used ANTOSOL A-65, and, accordingly, it will begin to freeze at a temperature of minus 65o.
TOSOL A-40 is a mixture of water with ethylene glycol and additives. This solution combines a lot of advantages. In addition to the fact that it begins to freeze only after the driver himself has already frozen (just kidding), TOSOL also has anti-corrosion, anti-foaming properties and practically does not form deposits in the form of ordinary scale, since it contains pure distilled water. That's why Only distilled water can be added to the cooling system.
When operating a car, it is necessary control not only the tension, but also the condition of the water pump drive belt, as its break on the road is always unpleasant. It is recommended that you carry a spare belt with you. If not yourself, then someone from the "gentlemen" on the road will help you change it.
Coolant can boil and damage the engine if it fails. fan motor sensor. Since the electric fan has not received a command to turn on, the liquid continues to heat up, approaching the boiling point, without cooling help. But the driver has a device with an arrow and a red sector in front of his eyes! Moreover, almost always when the fan is turned on, some vibration and a little additional noise are felt. There would be a desire to control, but there will always be ways.
It is especially unpleasant when the engine "boils" while driving off-road at low speed in hot summer. Therefore, there is a practical advice for those who like to explore the hinterland of their native land and also know how to hold a screwdriver in their hands.
If you add another toggle switch in the car (or use a free one), with which you can manually turn on the electric fan of the cooling system, then a failed sensor will not interrupt your trip. By monitoring the coolant temperature on the device, you can decide when to turn on and when to turn off the fan.
If on the way (and more often in a "traffic jam") you notice that the coolant temperature is approaching critical, and the fan is working, then in this case there is a way out. It is necessary to include an additional radiator in the operation of the cooling system - a radiator for the interior heater. Fully open the heater tap, turn on the heater fan at all turns, lower the door windows and sweat to the house or to the nearest car service. But continue to closely monitor the arrow on the engine temperature gauge. If it enters the red zone, stop immediately, open the hood and “cool down”.
Can cause trouble over time thermostat, if he stops letting fluid through a large circle of circulation. It is not difficult to determine if the thermostat is working. The radiator should not heat up (determined by hand) until the arrow of the coolant temperature gauge has reached the middle position (the thermostat is closed). Later, hot liquid will begin to flow into the radiator, quickly heating it, which indicates the timely opening of the thermostat valve. But if the radiator continues to be cold, then there are two ways. Knock on the thermostat body, maybe it will open after all, or immediately, morally and financially, prepare for its replacement.
Immediately "surrender" to the mechanic if you see droplets of liquid on the dipstick that have entered the lubrication system from the cooling system. This means that it is damaged cylinder head gasket and the coolant flows into the oil pan of the engine crankcase. If you continue to operate the engine with oil, half consisting of TOSOL, then the wear of engine parts becomes catastrophic. And this, in turn, is already associated with a very expensive repair.
Water pump bearing does not break "suddenly". First, there will be a specific whistling sound from under the hood, and if the driver “thinks about the future”, he will promptly replace the bearing. Otherwise, it will still have to be changed, but after being late for the airport or for a business meeting, because of a "suddenly" broken down car.
Each of the drivers should know and remember that On a hot engine, the cooling system is under pressure! If the engine of your car is overheated and "boiled", then, of course, you need to stop and open the hood of the car, but I do not advise you to open the radiator cap. To speed up the engine cooling process, this will practically do nothing, but you can get severe burns.
Everyone knows what a clumsily open bottle of Champagne turns into for smartly dressed guests. In a car, everything is much more serious. If you quickly and thoughtlessly open the stopper of a hot radiator, then a fountain will fly out, but not wine, but boiling TOSOL! In this case, not only the driver may be injured, but also pedestrians who are nearby. Therefore, if you ever have to open the cap of a radiator or expansion tank, then you should first take precautions and do it slowly.
Hence, we can conclude that the driver of that foreign car not only had a short driving experience, but he had not read this book yet! However, this is his misfortune, this should not happen to our reader!
