What if Jetta always sprays antifreeze after adding antifreeze?

Jetta always sprays antifreeze after adding antifreeze, and the method is as follows: \x0d\ 1. It may be that the return pipe is blocked, which makes the air in the waterway unclean. Touch the return pipe temperature of the kettle. If it is very hot, the circulation is normal. If it is cold, the exhaust hole of the cylinder head is blocked. \x0d\ 2。 Add antifreeze. There is a water temperature sensor under the water tank, which is connected by wires. Unplug the wire plug, there are three wires. Connect two thick red lines with wires and start the car. The electronic fan will rotate directly. If it doesn't turn, it is considered that the electronic fan is broken. You can connect the electronic fan directly to the battery to detect whether the electronic fan is broken. \x0d\ Note: The cold car is short of antifreeze for heating, and the warm air is not hot, which means it is short of antifreeze.