Pacific Automotive Network 1. The joints of water pipes and the water pipes themselves are aging and cracking. 2. If no leakage is found in the external inspection, check whether the water tank cover is damaged, because the water tank cover has an automatic pressure relief function. When the pressure of the cooling system is too high, the pressure relief valve in the water tank cover will open and release the excessive pressure. Release it. When damaged, the pressure in the cooling system will be released when the pressure in the cooling system is normal, causing the cooling system to lose water.
The reasons why the car water tank is always low on water:
1. The joints of the water pipes and the water pipes themselves are aging and cracking.
2. If no leakage is found in the external inspection, check whether the water tank cover is damaged, because the water tank cover has an automatic pressure relief function. When the cooling system pressure is too high, the pressure relief valve in the water tank cover will Open to release excess pressure. When damaged, the pressure in the cooling system will be released when the pressure in the cooling system is normal, causing the cooling system to lose water.
3. Situations such as cracks in the cylinder block or damage to the cylinder gasket and water leakage are relatively rare. But it’s not ruled out either.
4. First, check whether the exhaust pipe emits white smoke. If so, boil water. It may be a crack in the cylinder (the water tank is returning air upward, but the pot is not turned on), and the cylinder gasket is cracked. (That way the power is insufficient), then start the engine, use a rag or tissue paper or other absorbent material to check whether there are any water marks on the pipe clamps and other connections.
5. It may be a problem with the water tank cover. When you warm up the car, increase the accelerator to about 5,000 and check the pipe that goes from the water tank to the auxiliary water bottle to see if there is any water retained. If so, the water tank cover is broken.
6. When encountering this kind of problem, you should first check whether there are leaks outside the engine, water tank, and water pipes (check when the engine is started).
7. The water has evaporated, because after the water is heated, it will expand and overflow. It is much more than expected. It feels like a water leak, so it feels like there will be much less water. Try adding antifreeze. Because antifreeze does not expand as much as water.
8. If the water tank cover is not tight, you can intuitively see whether there is water leakage. But it is also the easiest to ignore. You can observe whether there are any traces of running water in the water tank.
9. Leakage in the heater water tank will also reduce the water in the water tank.
10. Water pump leakage is difficult to check. Generally, the water pump will be installed in the engine and inside. It is also more difficult to check. It requires very professional and experienced maintenance engineers to make accurate judgments.