How to understand that the car is warming: signs. Why is the car engine boiling: the reasons for its overheating

Signs and reasons for overheating of the car.

Content

The engine overheating is a common problem that motorists face in both summer and winter. Of course, there are much more cases of such a problem in the summer than in the cold season. In this article, we will consider the main reasons why the car engine boils.

How to find out what the car is warming: signs of car overheating

Review:

The main sign of overheating is detonation sounds, they are also called "knocking fingers." In fact, this is a wrong statement. This is nothing more than micro -explosions occurring in the process of combustion of fuel. That is, the fuel does not burn in the usual way, but is accompanied by microvryts. Such sounds are very often heard with a sharp pressure on the gas pedal or after a long stop, when trying to move sharply. This is the first sign that indicates that the system is overheating.
Pay attention to the panel. The fact is that motorists with experience rarely look at her. Drivers who have just started their movement by car also do not look there, because they are monitoring the road or the level of fuel. The working temperature is 85-95 degrees. With an increase in heating, a short-term indicator of 100-105 degrees is allowed. Constant heating above 105 degrees suggests that the iron horse is overheated, urgent measures must be taken. It is absolutely wrong to stop completely, drown out the motor. You will only aggravate the situation. It is necessary to act a little differently.
Another sign of overheating is the appearance of steam. But in this case, the problem is really serious, because you will have to immediately drown out the motor in order to prevent the further breakdowns in the iron horse.

The reasons for overheating of the car engine

In fact, there are a huge number.

Common reasons for overheating:

Insufficient oil level. The reason may be incorrect care when the owner does not monitor the level of oil, or the car simply “eats” the oil, or the oil receiver mesh, or the improper operation of the sensor, the oil is closed, from the fact that they flooded the wrong brand, a malfunction of the oil pump, bad The oil supply to the engine with frequent large accelerations.
A small amount of coolant. This happens when the antifreeze is very small. That is, you forgot to replace in time and its quantity is simply not enough to wash the entire fuel system. She does not have time to cool in time. In this case, it often happens when there is a leak. It is simple enough to detect if it is external, because the antifreeze is painted in bright colors. It is detected in the form of a wet spot after a long -term parking of the car. If the internal leak, then it is much more difficult to detect it, and you can’t do without the help of maintenance.
Radiator pollution. It occurs mainly due to the fact that insects simply clog into the grid. Therefore, from time to time, do not forget to blow out the radiator grid with compressed air.
The use of poor -quality fuel. The use of gasoline with a low octane number leads to overheating of the system and a decrease in performance. Therefore, try to refuel in the same place, and gasoline with good indicators. Do not save on your car.
Poor quality of coolant. How to choose antifreeze, and which one can be found out in this article. Indeed, a lot depends on the coolant. If you use the old antifreeze, then after 2 years the entire protective layer, which was created using inorganic salts, simply flips around and the tubes become naked. Or, on the contrary, it can boil a thick layer of salts, which prevents the normal cooling of the car system and thermal conductivity. We advise you to use modern liquids based on the brand of your iron horse.
Distance of the piston. The fact is that with wear of engine parts, very high pressure is observed. Because of this, compression appears inside the system, which leads to overheating. When replacing the pistons, the situation improves, and the system cools well.

Why does the engine boil?

Causes:

The cause of boiling the engine is a violation of the fan or its breakdown. The fact is that in old models the fan is completely absent. But in most cases, this knot is available, which contributes to cooling. The most interesting thing is that on the tracks at high speed, the problem of overheating with insufficient operation of the fan is absent. This is due to the fact that the system is blown by itself, thanks to the strong movement of the wind. The problem arises mainly when being in traffic jams or during a sharp start, after a long stop.
The problem can provoke the wear of the pump. Inside the car there is a special pump that drives a cooling liquid in a circle. If the impeller of this pump wears out, that is, forces are not enough in order to normally cool the system. Thanks to this, the engine boils.
Damage to the thermostat in an iron horse. There is a special system that has two cooling circles: small and large. Immediately cooling in a small circle, and then in large. With a breakdown of the thermostat, there is no signal that it is necessary to give cooling for a large circle. Thanks to this, the whole system boils. The only way out is the replacement of the thermostat.
The cause of the breakdown can be the failure of the temperature sensor. A fairly banal reason when the system on the sensors has a normal temperature, but the engine boils. This suggests that the temperature control sensor itself is faulty. It needs to be replaced, it does not respond and does not supply the coolant when heating the system.

Despite the apparent complexity of the car system, it is very simple. Basically, all the breakdowns that are provoked by overheating and boiling of the engine are associated with malfunctions in the operation of the cooling system. Therefore, the problem must be sought in pistons, pump, as well as in liquid for cooling.