Why does changing the water tank cause the hot air water tank to explode?

Water tank plays an important role in the cooling and heat dissipation of automobile. In the summer when the temperature in Shanghai continues to be high, car water tanks are particularly prone to some minor faults, such as insufficient water level, corrosion and water leakage, which will directly cause "boiling", that is, the temperature of the water tank reaches the boiling point. At this time, the engine has poor heat dissipation and high temperature, and the expansion of parts will reduce the fit clearance of all parts. On the other hand, when the temperature is too high, the viscosity of oil will decrease. In this case, the wear of all parts will increase. If proper treatment is not carried out immediately, the engine is likely to burn out and lead to serious engine damage accidents.

Fault scene judgment:

When the car is driving, white steam suddenly comes out of the hood, or the pointer of the water thermometer rises to the high temperature "H" mark position quickly, indicating that the engine temperature is too high. Generally, the water in the water tank is insufficient, leaking or the fan in the water tank is not running. Immediate processing:

Step 1: Find a safe place to park immediately, but don't turn off the engine immediately. Keep the engine idling to continue heat dissipation, and open the engine cover to improve the heat dissipation speed.

Note: When the water temperature is too high or even boiling.

1, don't try to continue driving, so as not to cause a big machine damage accident.

2. Don't try to open the cover of the water tank, otherwise it is likely to spray hot liquid and cause burns.

3. Don't pour cold water on the engine cylinder block and cylinder head, which may cause the cylinder block to burst due to sudden cooling.

Step 2: After a period of time, check whether there is water leakage under the car.

Step 3: Turn off the engine after the pointer of the water thermometer drops to a proper temperature position.

Step 4: Wrap the water tank cover with a wet towel, slowly turn on the first switch (1/4 rpm), and then completely open the water tank cover after the steam pressure is released, so as to check whether the water quantity and quality in the water tank and the fan belt are abnormal. If there is insufficient water, slowly add water to the vicinity of the highest mark line.

Note: If the water tank leaks or the fan belt is loose or broken, you can call the trailer company to wait for the trailer rescue. If necessary, you can also drive the car to the service factory at a low speed after the engine is completely cooled. Remember, you can't drive at normal speed, otherwise it is likely to cause permanent damage to the engine.

Daily maintenance of water tank

Generally speaking, antifreeze should be replaced after driving 20,000 kilometers or 1 year; Never add tap water without antifreeze.

Rusting and scaling of engine water tank are the most common problems. Rust and scale will limit the flow of antifreeze in the cooling system, reduce heat dissipation, lead to overheating of the engine and even cause engine damage. Oxidation of antifreeze will also form acidic substances, which will corrode the metal parts of the water tank, resulting in water tank damage and water leakage. The solution to the water tank problem mainly lies in the routine inspection on weekdays. Always check whether the water tank leaks or corrodes, and clean, replace or add antifreeze on time to raise the boiling point and prolong the service life. Generally speaking, antifreeze should be replaced after driving 20,000 kilometers or 1 year. This can raise the boiling point, prevent scaling and corrosion, improve the heat dissipation effect, make the water pump play a lubricating role, and avoid and eliminate the damage of instantaneous high temperature caused by bubbles to the engine.

Try not to add water when antifreeze is insufficient, especially in summer. Because chlorine contained in tap water will corrode, rust and block the water tank, engine and other systems, the cooling system will not cool well, resulting in excessive engine temperature and vehicle damage.