How to judge whether there is air in the water tank?

The most obvious feature of Pacific Auto Network is that the warm air in the car is not hot. When the antifreeze in the water tank has air resistance, the coolant circulation is not smooth, which is the performance of air in the water tank. When filling antifreeze, it fails to circulate in the engine at normal speed, and finally a high temperature alarm will appear, which is probably caused by too much air entering the water tank.

Exhaust method of automobile water tank;

First, we will warm up the vehicle for 5- 10 minutes. After the cooling fan rotates, the coolant will drop a little. Fill it with coolant and cover the water tank. However, this method can only cure the symptoms, not the root cause. If you want to completely eradicate the air in the water tank, you must do the correct operation when replacing the coolant next time. The following are the operation steps.

1. Open the engine compartment when the car is cold and check whether the coolant is sufficient. The side of the coolant pot has an upper limit scale and a lower limit scale. When the liquid level is lower than the lower limit when the car is cold, it will be added, and the amount of addition will be subject to the scale on the side of the kettle.

2. Check the connecting pipe for cracks and leaks, focusing on the five-way pipe (named after the five interfaces connecting each part).

3. Drain the old antifreeze, clean the liquid passage with clear water, so that clear water can continuously flow through the engine cooling system, then idle for 3 to 5 minutes to circulate the water, and continue to inject clear water until the flowing water is clean.

(Photo/Text/Photo: Pacific Auto Network Shi Lili)