What effect does high water temperature have on the engine?

When the pointer of the water thermometer reaches red H, or the red signal light with high water temperature lights up, it indicates that the cooling system is faulty or overloaded. So what effect does high water temperature have on the engine?

Damage of cylinder and piston: Too high water temperature will affect the temperature rise of engine cylinder block, resulting in deformation and damage of cylinder and piston, and even the possibility of cylinder pulling.

Power drop: the power of the vehicle will be greatly affected, and the comprehensive fuel consumption will increase sharply, which will also affect the damage of accessories around the engine.

Engine spontaneous combustion scrapping: the high water temperature directly affects the engine, and continuous driving may lead to engine scrapping or even spontaneous combustion, which directly affects the driver's life safety.

The lubricating effect of engine oil becomes worse: after being affected by high temperature, the lubricating effect of engine oil becomes worse, which eventually leads to increased wear of some moving parts and most small parts need to be replaced.

It should be noted that sometimes there may be a false alarm or sensor failure, which may also cause the engine water temperature to be too high. Therefore, when judging a problem, we need to look at both the data and the actual situation.