The reason why the water tank began to leak.
1, the cooling fan does not work;
2. Water temperature sensor failure;
3, the condenser does not dissipate heat;
4, thermostat failure;
5, antifreeze leakage, the remaining antifreeze, not enough to cool the engine;
6. The boiling point of the coolant is less than 105 degrees;
7. The cylinder head gasket is damaged, resulting in gas channeling;
8. The driving computer EUC is also faulty.
What if the water tank starts to boil?
1. Check whether the water tank cover is fastened.
2. Try to inject gas into the water tank to see where the water in the water tank seeps out under pressure, and then decide the repair plan.
3. Unscrew the oil cover to see if there are any traces of oil emulsification. If yes, disassemble the engine and replace the cylinder gasket.
There is something wrong with the quality of the water tank.
5. Check whether the circulation is normal.
The thermostat is not open enough, the flow in the water tank can't reach the vacuum state, and the water can't be sucked in. Also, the pressure in the water tank is greater than that in the auxiliary water tank, and water will escape. First check the tightness of the cooling system. See whether the flatness between the cylinder head and the cylinder block is flat, and whether there are cracks and air holes in the cylinder. In addition, see if the water tank is blocked. Look at the small tubes with fine checks. There is also to see if there is any coolant.
Car water tanks are always the cause of water shortage.
Reasons for water shortage in water tank:
1, water pipe joint, water pipe itself leaks, replace the water pipe or strengthen the seal;
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;
Judgment method
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-cooled sealing ring is damaged or has sand holes, you can check whether there are water drops and emulsifying phenomenon in the oil to make a judgment;