There are quite a lot of causes for engine overheating. In this article we will try to list them all, and to identify preventive measures are available to fight them. You need to know and remember that the overheating of the motor can lead to serious repair. To prevent this, you need to know the causes of engine overheating.
During the summer the radiator become clogged with poplar fluff, leaves and dust of a road, which leads to bad heat output. For prevention is necessary to periodically clean the radiator outside. Cars equipped with air conditioning are particularly hard suffered from this problem, because their main radiator is close to the radiator of air condition system. Often if you move aside one radiator, from there you can get a whole pie from leaves, dust and fluff.
Radiator can be clogged at both sides - outside and inside. Using of low quality coolant in the cooling system is deposited a precipitate which mainly accumulates in the radiator (in small tubes). If an engine is poorly cooled, it is necessary to make inside washing of cooling system.
The engine can overheat due to the failure of the fans. Usually this problem appears through the fault of the fan turn-on sensor, or it may be the result of the previous cause (clogged radiator). The layer of dirt is accumulated on the bottom of the radiator, and usual the fan sensor is located at the lowest point. Thus, it cluttered with a huge layer of mud, which prevents uniform heating of the sensor, and that causes delayed in activation. Make this check. Drain the coolant, unscrew the fan sensor and shove your finger in the hole. If the finger is immersed in clay or you will see a decent layer of dirt on it, then this is the first sign for flushing the cooling system.
Overheating can be caused by malfunction of a thermostat. The engine can warm up due to incorrectly adjusted ignition. Another very common problem is air in the cooling system.
The reason for boiling and splashing coolant may be a cap on the radiator or the expansion barrel, which does not hold the pressure in the system. Designated cooling system pressure must be created and hold there to the liquid does not boil in the normal engine operation. The higher the pressure, the higher will be the boiling point of the liquid. Functioning cap must hold a certain pressure. If the pressure rises above a limit value, the valve opens and pressure is released to a level.