What is the reason for the decrease of automobile coolant?

Many riders said that after driving for thousands of kilometers or months after adding coolant, it became less and fell below the lowest level. After inspection, I can't find the reason. After driving inexplicably, it quickly decreased, and the coolant could only be added again and again. So, what is the reason for the decrease of automobile coolant? The following is the reason why I collected and sorted out the decrease of automobile coolant for your reference, hoping to help friends in need.

First, the reason for the decrease of coolant

1, leakage;

This can be said to be the most common reason for the decrease of coolant, mainly including:

A, water tank cover leaks;

B, the water tank leaks;

C, water pump leakage;

D, hose looseness: this will generally decrease from time to time, and it will decrease quickly in winter.

E. the exhaust nut is loose;

F, cylinder gasket damage: generally speaking, the engine is dull and abnormal, and the wear is intensified, that is, the cylinder gasket is broken.

The cooling liquid is reduced due to liquid leakage, and traces of water can be clearly seen under the chassis or water tank. Of course, some small leaks may need to be disassembled to see the clue.

2. Transitional natural consumption;

For example, problems with engine oil and cooling system lead to excessive engine temperature, which in turn leads to excessive consumption of coolant.

3, antifreeze injection cylinder;

If the intake manifold gasket and cylinder gasket are damaged, the coolant will enter the cylinder and evaporate.

4. There is something wrong with the thermostat;

Second, the antifreeze add related instructions:

1, check the coolant level: Please don't open the lid of the kettle at high temperature, because high-temperature and high-pressure water is sprayed out, which is equivalent to a pressure cooker. The cooling liquid in the cold car state is less than that in the hot car state, and it is easy to cause misjudgment when looking at it in different States.

2, the coolant also pays attention to thermal expansion and contraction, and sometimes the water tank has pressure, which will also reduce the liquid level.

3. When adding coolant, it should be added after the engine temperature drops. In the process of adding, the engine should be started properly, the gas in its system should be exhausted, and the coolant should be added slowly before it can be filled up. If necessary, drain the cooling system according to the manual.