How To Treat Truck Fever? Teach You How To Deal With The Engine
Engine water temperature is too high, first analyze the reasons
1. whether the coolant is sufficient;
2. whether the thermostat is working properly;
3. whether the water tank scale is too much;
4. whether the radiator is covered with foreign objects.
Then according to the actual situation to add coolant, thermostat repair, clean up the water tank or clean up the radiator, and other related treatment.
The May Day holiday, the temperature across the country quickly climbed, hot weather driving in addition to the body of card users will bring a great test, for the vehicle is also a considerable test. This time of year is the high incidence of vehicle failure season, often running outside the truck in the high temperature is easy to appear in the engine water temperature is too high, that is, we often say “open pot”.
Under normal circumstances the engine water temperature should be between 80°C and 90°C. If the water temperature is often higher than 95°C it is too high. So, what are the causes of high engine water temperature? How can we deal with these problems in daily operation?
● Four Reasons For Boiling Water Tank
Cause 1: insufficient coolant
The heat of the engine is circulated off through the coolant, and the heat taken away by insufficient coolant will naturally be reduced. If you check the coolant and find that the coolant level in the water tank is below the minimum scale, it means that the coolant is missing.
Treatment of insufficient coolant
1. check whether there is water leakage outside the cooling system, if there is leakage, the location of the leakage should be repaired first.
2. If there is no water leakage, add coolant to the specified scale.
When adding coolant, be careful not to open the tank cover immediately after parking, at this time the water temperature in the tank is very high, the pressure is also very large, immediately open may cause high-temperature steam emitted, scalding us. It is recommended to wait for some time before opening. To prevent the water vapor from burning your arm, it is better to put a towel when opening the water tank cover
Cause 2: thermostat failure
The main role of the thermostat is to regulate the cooling intensity of the cooling system, it is prone to failure or functional decline after a long period of use, resulting in slowing down or even interruption of water circulation.
As shown in the figure above, when the engine temperature is low, the thermostat will close the large circulation water circuit to connect the small circulation water circuit to reduce heat loss so that the engine temperature rises quickly. After the engine temperature rises to a certain value, the thermostat will turn on the large circulating water circuit and turn off the small circulating water circuit. After the thermostat fails, it can’t turn on the large circulating water circuit, which will cause poor heat dissipation
Treatment of thermostat failure
Remove the thermostat and put in hot water.
1. the thermostat main valve should start to open when the water temperature rises to about 70℃.
2. When the water temperature reaches 80-86 ℃ thermostat valve should be fully open, the valve height should generally be not less than 9mm.
If the above requirements are not met, it means that the thermostat needs to be repaired or replaced.
Reason 3: too much scale in the cooling system
When the water tank is not cleaned for a long time or not using regular antifreeze, the cylinder and radiator are prone to accumulate thick limescale, and because of the poor thermal conductivity of limescale, it will lead to poor heat dissipation after blocking the water tank. So the water tank needs to be cleaned regularly, but also pay attention to the use of formal antifreeze.
Treatment of too much scale in cooling system
After the heat sink is covered with mud, leaves and other debris, the air intake and heat exchange will be greatly reduced, causing the water temperature to be too high. When it comes to the season of willow fluttering, a large number of poplar flakes will be attached to the heat sink, and the heat sink will be covered with a layer of “quilts” after the heat dissipation effect is not ideal.
Treatment method of heat sink covered by foreign matters
1. After the engine is turned off, from the back of the radiator with compressed air blowing, or flush with a low-pressure water stream. The reason for not flushing with a high-pressure water gun is that this can cause damage to the radiator.
2. Remove the debris and then use a soft brush to clean the core.
● what to do when the water tank boils?
After the occurrence of water tank boiling, if it is high speed driving boiling, you can not immediately stop and turn off the engine, but should be parked and idle for a while and then turn off the engine, and open the engine hatch to let the engine heat.
Why can not immediately stop and turn off the engine? Because when the engine is running at high speed, the engine generates a lot of heat also need residual cooling water to heat out, if the engine stops running, the cooling system does not work, high temperature will cause engine parts deformation damage.
It can be seen that the cause of the problem of open water tank is relatively complex, and the water tank will accelerate the wear and tear of engine parts, causing great damage to the engine. Card users in the usual car need to do a good job of maintenance and inspection of the car, often pay attention to the observation of the instrument, to do early detection and early treatment.