The air supply of the model spraying air pump is insufficient.

This has never happened before, but please check whether the pipeline is damaged or the joint is damaged first to see if there is any air leakage. In addition, the pump itself may also be damaged, such as the position of rubber ring or piston piece. Better check it. Usually, there is air leakage without air pressure.

Generally, the air pump is still relatively strong, as long as you are careful not to overheat because of long-term work and not to be damaged because of falling, it is basically possible. Generally speaking, 168 is quite good. Hehe, I used 108 at first, and then changed it to Junshi L 10. It has been used for almost 4 years.