There are several ways to find out if your cooling system really withstands pressure. One of them, tighten the radiator cover and run the engine. Когда двигатель достигает нормальной рабочей температуры, включите кондиционер (для увеличения тепловой нагрузки на систему) и / или проехать несколько минут. Then check the radiator, hoses and water pump for seeping and leaks.
Attention: do not open the radiator cover while the engine is hot! Even if the cooling system has leaks, it will still be under significant pressure – especially if the coolant level is low, it boils inside the engine. Turn off the engine and let it cool, about an hour. Then put a rag on the radiator cover and slowly turn the lid until it starts to dump the pressure. Wait until the pressure is reset, and then open the lid until the end.
Test set for testing.
A special tool called the pressure tester can be used to check the cooling system. The tool is nothing more than a small manual pump with a combination of a vacuum manometer and various adapters for a radiator’s pouring neck and expansion tank. To check for the presence of leaks, connect the tester with the radiator and the pump pump up the pressure to the value of the radiator indicated on the lid. For example, if 0, 9 AT is indicated on your radiator cover, then the pressure is pumped up to 12 kg. And wait to see what is happening. If there is no leakage, the system should keep pressure from 10 to 15 minutes. If the system does not keep pressure, in the leakage system. If you do not see visible leaks on the outside, this means that the leak is inside (poor gasket of the head of the block or crack of the head or block).
The fluid tester is another tool that can be used to detect the arising head of the head. Gas-sensitive blue liquid changes color if there is any of the combustion products in the coolant.