Check whether there is water leakage in the internal combustion engine. First check whether there is water leakage in the internal combustion engine and whether the water tank is short of water. Then check the tightness of the fan belt. If the fan belt is not loose, check whether the fan blade angle is installed correctly. Whether the blades are damaged and the wear and tear of the water pump and its pumping capacity.
Check whether the internal combustion engine has been operated under low speed and overload for a long time, whether its fuel injection time (or ignition time) is too late, and whether the fuel injection time (or ignition time) of the internal combustion engine is too late. Yes: The exhaust sound is loud, black smoke comes out of the exhaust, the machine runs weakly, and the power drops significantly.
Check whether the thermostat of the internal combustion engine has failed. The characteristic of a thermostat failure is that the cooling water temperature inside the internal combustion engine is high, while the water temperature in the radiator is low.
At this time, you can remove the thermostat from the internal combustion engine and then start the engine. If the water temperature of the internal combustion engine is normal, it can be determined that the thermostat has failed. If the water tank pipe is partially blocked, the water temperature of the internal combustion engine will rise too high. quick.
The water temperature is too high due to installation problems.
(1) The distance between the water tank and the engine is too large, and the fan is outside the wind circle. This can be solved by adjusting the installation position of the water tank;
(2) The air conditioning condenser is blocked in front of the water tank. There are two solutions: first, if there is enough space in the engine compartment, change the installation position of the air conditioning condenser; second, if the generator has sufficient power generation, install an electric fan in front of the condenser.
2. The water temperature is too high due to use and maintenance problems.
(1) The engine structure is compact and the corresponding water channel is small. In the southern region, soft water or distilled water must be added to avoid scale formation in the water channel; in the northern region, genuine cooling ( Antifreeze) fluid to prevent cylinder head corrosion.
(2) When the engine is drained of water, or the engine is short of too much water, the air in the engine may not be completely exhausted after the first water filling. If no measures are taken, it may cause air lock and cause the engine to malfunction. The temperature is too high. The solution is: after adding water, run the engine for a few minutes, open the water filler cap, and fill up the water again.
(3) If the gasoline does not reach the specified grade (in principle, it is not allowed to be used) or the ignition time is early, it can cause the engine to knock and make the water temperature too high. The solution is: adjust the distributor and delay it appropriately. Post ignition time.
(4) Check the engine oil and water before driving out every day to ensure that the water tank is filled with water.
(5) The fan belt is too loose, which can cause the water temperature to be too high. Belt tension can be adjusted appropriately.
3. Failure of some parts may cause the water temperature to be too high.
(1) If the idle speed of the air conditioner is too low, it may cause the water temperature to be high. You should check whether the air conditioner idle speed lifter is working properly;
(2) The cylinder head is uneven or the cylinder gasket is uneven. Being flushed can cause the water temperature to be high. The check method is: when the engine is cold, open the water filler cap and start the engine. If there are bubbles coming out of the water tank, it may be the problem.
(3) Engine is coldFailure of system parts (such as thermostat, water pump and fan clutch, etc.) can cause the water temperature to be too high. Corresponding parts should be checked and replaced.
The reasons for high engine water temperature in summer are complicated. When this problem occurs, you can check it one by one according to the following methods. If you still cannot find out the cause, you can go to the service station for repair. Never go to an irregular repair shop to replace parts without knowing the cause of the fault, otherwise it will cause you time, energy and financial losses.