2. The cylinder body is cracked, the cylinder head gasket is lax or damaged, and water channeling occurs;
3. The oil radiator sealing ring is damaged or has sand holes, resulting in cross-flow of water;
4. The water tank cover is not tight;
5. The heater water tank leaks;
6, tee leakage;
Judge small experience:
1, see if the exhaust pipe emits white smoke. If it does, boil water, it may be that the cylinder block is cracked, and the cylinder head gasket is lax or damaged;
2. If there is a crack in the cylinder: the water tank will return air upward, but the pot is not boiled;
3, the cylinder head gasket is lax or damaged, which will cause insufficient power of the car;
4. When the engine is running, you can check whether there is water leakage at each interface with a rag or absorbent paper towel.
5. Fill the water tank with water, don't cover the water tank, start the engine, and refuel to about 2000 rpm to see if there are bubbles in the water tank. If yes, the air duct of the cylinder gasket is flushed, and the cylinder head is likely to be deformed;
6. If the oil cooling sealing ring is damaged or has sand holes, you can check whether the oil has water drops and emulsifying phenomenon to make a judgment.
Extended data:
function
When the engine water temperature is high, the water pump pumps water repeatedly to reduce the engine temperature. The water tank consists of hollow copper pipes. High temperature water enters the water tank and circulates to the engine cylinder wall after air cooling) to protect the engine. If the water temperature is too low in winter, the water circulation will stop at this time to avoid the engine temperature being too low.
Automobile water tank is mainly composed of radiator core, water pipe, cooling blades, upper water tank and lower water tank. The upper water tank is on the radiator, and the upper water tank is connected with the water tank below the radiator through a water pipe.
When the hot water flows from top to bottom to the lower water tank, it becomes warm water, and the cooling fan blades form a small hole. Through the suction of the fan and the relative wind speed when the car moves forward, a large amount of cold air passes through the air holes, absorbs the heat of the cooling water flowing through the water pipes, and then dissipates into the atmosphere.
The car water tank is not filled with tap water, but with antifreeze, which cannot be replaced by tap water. Tap water is easy to boil, which is unqualified. Antifreeze can reduce and control the temperature. There are many substances in tap water, which is easy to produce rust, but it is slow to produce antifreeze, and it has a certain cleaning effect after replacement.