What problems with the car cooling system can cause engine high temperatures?

1、 Oxidation, rust or scale formation in the cooling system can hinder the circulation of the coolant;

2、 The surface of the radiator is dirty, with oil stains and other debris, which prevents it from dissipating heat properly. When the oil stains and debris reach a certain thickness, it is like covering the surface of the radiator with an insulation blanket, which not only fails to dissipate heat, but also serves as insulation;

3、 Mechanical faults in the cooling system (incorrect fan angle, loose fan belt, coolant leakage, damaged water pump, damaged oil cooling nozzle, damaged thermostat, etc.).

How to solve the problem of engine high temperature mentioned above? Below, I will elaborate on my approach to handling the above-mentioned fault problems during my years of working in mechanical technology management, and discuss with everyone:

1、 Firstly, it is necessary to understand how the malfunction of oxidation, rust or scale formation in the automotive cooling system hinders the circulation of coolant. I think it is caused by drivers not being able to use coolant correctly. For example, in winter, many drivers can use antifreeze, but in spring, summer, and autumn, when the coolant decreases, many drivers supplement it with water instead of antifreeze, and even the entire cooling system is filled with water. Due to the circulation of water in the cooling system (composed of hydrogen and oxygen atoms), it can cause oxidation and rust on the inner walls of the cooling system. There are also many minerals in the water that continuously increase or decrease in temperature during engine operation, resulting in scale formation. Rust and scale cause thickening of the inner walls of the cooling system, resulting in poor heat dissipation performance and obstructed circulation of the coolant.

It is recommended that drivers use antifreeze that meets national standards for a long time, because the main components of antifreeze are ethanol, glycerol, and additives, which will not cause oxidation and rust on the inner walls of the cooling system, nor will they produce scale. The additives in antifreeze also have the function of rust removal and scale removal. Replacing it every two years can keep the cooling system intact as new, which is the best way to solve the problem of thickening the inner wall of the cooling system, deteriorating heat dissipation performance, and obstructed coolant circulation.

So what if the vehicle's cooling system has already used water as coolant? It is recommended to take a cycle of one year to remove the radiator, then remove the upper and lower chambers, and use a connecting rod to remove the rust and scale on the inner wall of the radiator, so that the inner wall remains new and the circulation is normal.

2、 Dirty, oily, and other debris deposits on the surface of the radiator are the most easily overlooked by drivers, as the cleaner the metal surface of the radiator, the better its heat dissipation performance, and vice versa.

It is recommended that drivers regularly clean the surface of the radiator and the interlayer of the intercooler to ensure that the surface is as clean as new, and to maintain the appropriate temperature of the engine in any operating state.

3、 Do a good job in the daily maintenance of the vehicle, carefully inspect the mechanical components of the cooling system, such as the angle of the fan, the tightness of the fan belt, whether the water pump is running normally, whether the radiator and water pipes are leaking, and whether the oil cooling nozzle is damaged. To achieve regular maintenance, items that cannot be inspected by oneself should be sent to designated repair shops for professional inspection. Do not procrastinate, as minor problems can turn into major ones, which not only increases repair costs but also affects the normal operation of the vehicle.

As long as drivers regularly maintain and inspect the engine according to the above methods, they can ensure that the engine maintains a suitable temperature in any operating state, effectively avoiding engine high temperatures caused by high environmental temperatures, poor heat dissipation, etc., and avoiding the occurrence of engine accidents such as cylinder pulling, bearing, cylinder expansion, cylinder tamping, and piston topping.