Engine overheating not only occurs in summer, but can also occur during everyday driving. In particular, cars, motors and air conditioning systems running at high speed can cause a boiling phenomenon when the water temperature is too high. It is dangerous to overheat the engine. It may be bad luck that which can damage the engine. When driving on highways at higher speeds, or getting into a car, if the water temperature gauge pointer enters the red zone and remains high, appropriate action should be taken at this time. Here’s how to handle engine overheating.
There are many causes of overheating, including insufficient coolant, cooling fan failing coolant, thermostat failure, and coolant temperature sensor failure. If handled incorrectly, it can lead to costly engine failure. Therefore, timely detection and proper elimination of overheating can effectively reduce losses.
What is the effect of engine overheating on the engine?
1. Reduced aeration efficiency, resulting in a drop in engine power.
2. Increases the propensity for pre-ignition and deflagration, which disrupts normal engine operation; at the same time, it also causes premature damage due to additional impact loads on the parts.
3. The normal space of the moving parts is destroyed, so the parts cannot move normally or even be damaged.
4. The mechanical properties of the metallic material are reduced, causing damage due to deformation of the part.
5. Deterioration of lubrication condition exacerbates friction and wear of parts.
How does engine overheating occur?
First, poor engine cooling: Poor engine cooling can cause the water temperature in the tank to be too high. The more the water tank is used, the more internal scale will build up, resulting in poor heat dissipation in the radiator. Water with too high a temperature will not release heat and will turn into a “pan”. In addition, the radiator vent hole is also a common cause of poor heat dissipation. If the external blockage is not vented, use a water gun to clean it. If the inside of the radiator is blocked, clean it with a cleaning solution.
Second, the cooling system is not working properly, resulting in poor heat dissipation. At this time, check the fan belt tension and whether the fan blades are warped or broken.
Third, the thermostat automatically adjusts the amount of water entering the radiator according to the temperature of the cooling water, to ensure that the engine runs within a suitable temperature range, which can play a role in saving energy. energy consumption. If the engine overheats, check that the thermostat is working properly. It starts at 70°C and opens fully at 83°C. When the fully open valve height is not less than 9mm, the thermostat can be put into the water for heating inspection. If the thermostat cannot be opened or the opening degree is not enough, the thermostat must be replaced.
Finally, be careful not to turn off the engine when it is overheated. If the fan belt and coolant circulation are normal, do not turn off the engine and wait for it to cool down. Normally, people tend to feel that the engine cools down more easily after the flame is blown out. Actually, after cooling down, the cooling fan and coolant circulation will stop, causing the engine to run hotter. There are two coiled fans on the side of the engine compartment bumper. One is a cooling fan that cools the engine while the engine is running and the other is an air conditioning fan that is used when the air conditioning is on. Therefore, if the fan belt does not break when the car overheats, it is better not to turn off the engine, but also turn on the air conditioner at the same time, so that the engine cooling rate is faster.