Why is the car wash pump not drawing water?

[Shaun]

The reasons why the car wash pump is not drawing water are as follows: 1. Air in the pipe: The high-pressure water pump or the inlet pipe has sucked in air, causing the pressure to not rise. Simply intermittently pull the trigger of the high-pressure water gun, lower the working pressure of the high-pressure cleaner, and run it for a while until stable pressure is generated. 2. Insufficient water supply: Insufficient water supply leads to low pressure. First, check if the water tank level is too low, if the inlet pipe has come out of the water, or if the inlet pipe is leaking air. In this case, you need to add water to the tank or replace the inlet pipe. For non-self-priming pumps, check if the water source pressure is sufficient and if the inlet flow meets the pump's requirements. 3. Clogged filter screen: A clogged inlet filter screen causes low pressure. In this case, simply clean the inlet filter screen.