The performance of air in the automobile water tank is actually that the antifreeze in the water tank has air resistance, which will lead to poor circulation of coolant. After adding antifreeze, it can't circulate normally in the engine, and finally there will be a high temperature alarm, which is probably caused by too much air in the water tank.
First, open the engine compartment in a cold state and check whether the coolant is sufficient. There are maximum and minimum scales on the edge of the cooling kettle. When the liquid level is lower than the lower limit when the vehicle is cold, it should be added. The addition amount is subject to the scale on the pot side. Step 2, check whether each connecting pipe has cracks and leakage, focusing on the five-way pipe; Step 3, discharging the old antifreeze, cleaning the liquid passage with clear water to make the clear water continuously flow through the engine cooling system, then idling for 3-5 minutes, allowing the water to circulate, and continuously injecting the clear water until the flowing water is clean; Step 4, in order to let the antifreeze flow into the water tank quickly, after draining for about an hour, add new antifreeze from the water pipe of the water tank, and then add a bucket of antifreeze to the antifreeze tank until the antifreeze tank is almost full.