What should I do if the water temperature of Wuling cyclone is high and the water tank does not turn?

First, check the amount of water in the cooling system. The engine cooling system is short of water, and the cooling water can't circulate to dissipate heat, which leads to the engine temperature being too high. There may be two reasons for the lack of water in the cooling system: first, the cooling water is not replenished in time during normal consumption; Second, the cooling water leaks seriously. When the engine is working normally, the cooling water temperature should be between 80℃ and 95℃, at this time, part of the cooling water will be evaporated. If it is not replenished for a long time, once the water pump can't pump water, it will lead to high-temperature human failure of the engine due to lack of water. If the sealing performance of the cooling system is damaged, the cooling water will leak seriously, and it will also cause water shortage and high temperature, such as excessive wear of the water seal of the water pump, cavitation of the wet cylinder liner, cracks in the cylinder block and damage to the water seal of the cylinder liner. The latter three will not only cause the high temperature of the engine, but also cause the lubricating oil to deteriorate because the cooling water leaks into the sleeve bottom shell and mixes with the lubricating oil, which will lead to serious accidents such as tile burning and shaft locking. If the dipstick is pulled out, the oil level rises obviously, and the color of lubricating oil turns white, indicating that cooling water has leaked into the crankcase. Find out the oil leakage part, repair it and replace it with a new sleeve. The replaced engine oil is precipitated to separate the oil from the water. Take the upper engine oil and heat it to 30℃-50℃ to evaporate the water in the oil. If the viscosity, acid value, sludge and impurities of the engine oil are within the allowable range, it can be used continuously. Second, the inspection and maintenance of the radiator If the temperature of the engine is high with sufficient coolant, it is necessary to inspect the radiator. 1. The radiator core is blocked by sundries. Cars have been driving on muddy, dusty and overgrown roads for a long time, and the radiator is filled with dust, grass leaves and insects, which leads to poor heat dissipation. In this case, after turning off the engine, blow with compressed air from behind the radiator or rinse with low-pressure water to remove impurities, and then clean the core with a soft brush. 2. Deformation and adhesion of heat sinks Due to mechanical damage and other reasons, the heat sinks are piled up or stuck together, so that the airflow cannot pass through the radiator core smoothly, resulting in poor heat dissipation. The solution is to carefully move the radiator to its original position with a thin steel plate (such as a waste saw blade) to restore the straight shape of the radiator. 3. The radiator core tube is blocked. The driver fills the cooling system with hard water and river water with high sediment content for a long time, so that the sediment and dirt in the cooling water adhere to the inner wall of the core pipe, causing the core pipe to be blocked or blocked. The inspection method is: after the engine is hot, touch the upper and lower parts of the core tube with your hands and pay attention to the temperature difference. In general, there is a temperature difference between the top and bottom, but the difference is not big. If the temperature difference between the top and bottom of the core tube is obvious (because there is no hot water passing through the bottom), it means that the core tube is blocked; If the number of blocked core tubes exceeds 15 of the total number of core tubes, the cooling effect will be greatly reduced. At this time, the radiator should be removed, washed with hot soda water (80℃-90℃) containing 5%- 10%, and the core pipe should be dredged with steel brazing, and then washed with hot water. Third, the inspection of fans and fan belts On modern cars, the engine cooling system is generally a combination of air cooling and water cooling. Whether the air cooling is normal or not is extremely important to the cooling effect. If the belt slips, it will affect the air cooling effect. Therefore, the tension and damage of the belt should be checked frequently. If it is found to be too loose, it should be adjusted. If the rubber is delaminated or the fiber layer is broken, it should be replaced. Secondly, check the rotation of the fan blades. At present, many models use silicone oil fan clutch, which automatically disconnects the power transmission of the fan when the engine is at low temperature, so that the engine can quickly heat up and reduce the rapid wear and tear when it is cold. However, when the engine reaches the normal operating temperature, the fan should enter normal rotation. If the fan speed is not up to standard due to the dry silicon sleeve in the fan clutch or the failure of allergic bimetal, the cooling system will have high temperature. The inspection method of this fault is: 1. Cold inspection. After the vehicle stops overnight, there is still silicone oil between the driving plate and the driven plate of the fan clutch. Because of the high viscosity of silicone oil, it is difficult to turn the Phoenix fan at this time. Start the engine, run at a medium speed of 1-2 minutes, let the silicone oil in the working chamber return to the oil storage chamber, and immediately shut down the engine. At this time, the fan should be easily rotated with less force. 2. Check the thermal state and start the engine. When the water temperature reaches 90℃-95℃, listen carefully to the noise changes at the fan. If the noise increases significantly within a few minutes, the fan speed increases rapidly. When the fan reaches full speed, turn off the engine immediately. It is normal to turn the fan by hand at this time. If the above requirements are not met, the clutch is invalid, and the reason should be found out to eliminate the fault or replace it with a new clutch. Most modern cars use electronic fans to control the temperature of cooling water. Generally, when the water temperature is 89℃-92℃, the electronic fan rotates at a low speed; When the water temperature is 97℃- 103℃, it rotates at high speed. If you don't meet this technical requirement, you should check the circuit. Four. Inspection of cylinder gasket If the above inspection is normal, the sealing condition of cylinder gasket should be considered. If the cylinder gasket is burned by high-temperature gas, high-pressure gas will rush into the cooling system and make the cooling water boil. To judge whether the cylinder gasket is burnt out, you can turn off the engine, wait a moment, restart the engine and increase the speed. If you open the radiator filler cap at this time, you can see a lot of bubbles coming out, and at the same time, there are often small water droplets discharged with the exhaust gas in the exhaust pipe. Therefore, it can be concluded that the cylinder gasket is damaged and should be replaced with a new gasket. V. Inspection of Thermostat A thermostat with good work, the valve starts to open when the water temperature is 68℃-72℃, and the valve is fully opened when it is 80℃-85℃. If the water temperature at the beginning and full opening is higher than the above regulations, the cooling water temperature will be too high. In winter in cold areas, if the thermostat fails and the valve is stuck in the closed position, the refrigeration system will not have a large cycle, and the radiator will freeze, resulting in the expansion and damage of the core tube; If it is in summer, it will cause the engine to heat up. In this case, the thermostat can be taken out and hung in a warm water container. At the same time, place a thermometer vertically in the water (without direct contact with the bottom of the container), heat the bottom of the container, and observe the water temperature when the thermostatic valve starts to open and completely opens. If it does not meet the above requirements or is obviously damaged, it should be replaced. Check the ignition timing of intransitive verbs. The ignition advance angle of gasoline engine or the fuel supply advance angle of diesel engine is too early or too late, which may cause the engine temperature to be too high. This is because no matter whether the ignition advance angle or the fuel supply advance angle is ahead or behind, the contact area between the high-temperature gas and the cylinder wall increases during combustion, the time is prolonged, and the heat transferred to the cooling water increases, resulting in an increase in the temperature of the cooling water. At the same time, engine power decreases and fuel consumption increases. 7. Other reasons that may lead to high engine temperature 1, driving in downtown areas in hot summer, due to frequent starting and long-term idling, poor heat dissipation leads to high temperature. 2. If the distance between the condenser and the radiator is too close, the heat dissipation will be blocked, which will easily lead to excessive temperature. 3. Driving at high speed under overload will produce high temperature. 4. Continuous driving on a long uphill road will lead to high temperature. 5. The water cooling system has too much scale, and the heat transfer is blocked, and the heat cannot be dissipated in time, which leads to the diagnosis and elimination of high temperature and overheating of the engine. It is a malignant fault, which directly endangers the engine's work, and in serious cases, it will lead to the seizure or strain of the piston and cylinder. Therefore, once the engine is overheated, it should be diagnosed accurately and eliminated in time according to its different manifestations. Sudden overheating in use When the car is running, if the engine suddenly overheats while the cooling system is always in good condition, the main reasons are as follows: 1, the cooling system leaks seriously, resulting in insufficient coolant and overheating. In this respect, the diagnosis can be made directly through observation, and the fault can be eliminated smoothly. 2. The pump failure will interrupt the cooling water circulation, resulting in overheating of the engine. At this time, it can be diagnosed by touching. The specific symptom is that the engine temperature is very high, while the radiator, especially its lower part, is low. In this regard, the pump should be overhauled or replaced. 3. The water pump belt is broken and overheated. Careful maintenance personnel or drivers can know by observing the dynamic of ammeter that if the engine is overheated due to the discharge or charging indicator light on during driving, it means that the water pump belt is broken. 4. The main valve of thermostat falls off and gets stuck in the water inlet pipe, which hinders the large circulation of cooling water and makes the pressure in the engine water jacket rise rapidly. When the pressure reaches a certain level (very high), the cooling water will push the stuck main valve to change its direction and connect the large circulating waterway. At this time, the boiling water impacts the radiator cover with great pressure, resulting in a strong "boiling" phenomenon. When this fault occurs, the thermostat should be replaced. There are two main situations of insufficient cooling water and overheated cooling water: cooling water leaks or evaporates, and the water volume is lower than the standard capacity. 1, excessive consumption of cooling water, overheating in operation. This should be checked according to the following methods: (1) After the water tank is filled with water, run the engine at idle speed, and check whether there is external leakage in the radiator, water pump drain hole and cooling system, and remove it if there is; (2) Check whether there is water in the crankcase oil. If there is water in the engine oil, disassemble and overhaul the engine; (3) Check whether the exhaust pipe is emptied. If so, it may be that the cylinder gasket is damaged, which makes the water jacket collude with the cylinder. Therefore, the cylinder gasket should be overhauled and replaced. 2. The water capacity of the cooling system is lower than the standard capacity and overheated. Inspection method: (1) over-standard scale. It mainly appears in engines that use water as coolant for a long time. With the increase of mileage, the scale on the water jacket wall and radiator pipe in contact with cooling water will gradually thicken, especially in the high temperature part. This makes the cooling surface of the cooling system seem to have a layer of heat insulation material, so it is difficult to dissipate the heat generated by the engine in time and overheat. For excessive scale, scale remover can be selected according to the operation method in the manual to remove scale. (2) The water tank is blocked by sundries. There used to be a car that liberated CA 109 1, which often overheated. After the capacity check, it was found that it was far below the standard capacity. When the water tank was disassembled, it was found to be very heavy. There are many impurities such as sludge, scale and cotton yarn in the original water tank, which blocks many core pipes. After cleaning and repairing, overheating disappeared. Overheating caused by other reasons When the above factors causing engine overheating are eliminated and the problem cannot be solved, it is necessary to check whether the following reasons exist. 1, ignition timing. When the engine is in use, with the extension of time, the mechanical wear will gradually increase and the ignition time will gradually delay. In addition, some drivers and maintenance personnel are always worried about the premature detonation of ignition, and the ignition time is often artificially delayed when adjusting. If the ignition is too late, the combustion gas will contact the cylinder wall for too long, which will eventually lead to overheating of the engine. In addition, the ignition advance device in the distributor works poorly or fails, which will also lead to the engine ignition being too late. Therefore, it is very beneficial to prevent the engine from overheating to adjust the ignition timing regularly and ensure that the ignition advance device is in good working condition. There is something wrong with the thermostat. The main performance is that the main valve of the thermostat cannot be opened or the thermostat is stuck between large and small cycles. In addition, the thermostat is aging, and the expansion body leaks due to poor sealing. These faults will affect the engine overheating due to poor cooling water circulation after the engine temperature rises. There are two ways to check the thermostat: First, start the engine (at a certain engine speed) and open the water tank cover for observation. If the rolling phenomena of low temperature and high temperature are consistent, the thermostat is stuck between large cycle and small cycle; If the liquid level rolls violently at low temperature, the thermostat is stuck in a large cycle state; If the temperature reaches the normal working temperature of the engine and the liquid level is still calm, it means that the thermostat can't be opened. Second, put the thermostat into cold liquid for heating, and observe whether its opening temperature, full opening temperature and main valve lift meet the requirements. If any index does not meet the requirements, the thermostat should be replaced. 3. The fan clutch is not working well. Use silicone oil fan clutch to check whether the fan can reach full speed when the water temperature is 90-95℃. The simple detection method is: turn off the fire at high temperature and stir the fan by hand, which is normal to feel laborious; Otherwise, it needs overhaul. Check the temperature-controlled electric fan, taking Santana car as an example: under normal circumstances, when the temperature reaches 93-98℃, the fan starts to run at low speed; When the temperature rises to 99- 105℃, the fan starts to run at high speed. Otherwise, the temperature control switch should be replaced. 4. Influence of carbon deposition in combustion chamber. Excessive carbon deposition in the combustion chamber will make the engine deflagrate and burn prematurely, which will also lead to poor heat dissipation. In this regard, the carbon deposit in the combustion chamber should be removed in time. 5, hot season, long-term overload. In this case, pay attention to the change of coolant temperature, and take a rest in the shade when necessary, and cool down at idle speed. In addition, cars equipped with air conditioners should also turn off the air conditioners to prevent overheating.