Pump running out of the curve - low power?

The degree of the parts in the pump is large. It’s time to replace the widget.
The suction pressure is too low; Air bubbles in the pump suction.
Filters have been partially blocked.
Operation speed is too low. Check Voltmeter.
The exhaust button for the suction tank has been locked.
Branch valve on suction opening or partially open.
Alternate valves are closed but open.
The suction pipe was broken, leaking. There are heavy objects that have gone through, stepped over.
Smoking pipes are punctured; broken due to erosion.
The air enters through the sealing. You should replace it with a seal.

Pump running out of the curve – low power?