... the door-first wet the car---then brush the car-then wash the car.1,Open the spray gun, ... mist,wet the car body, wheels, and rinse dust on the car surface.2,The pump membrane is anti ... spray gun or presssure be smaller.Gun leaking, pump quick head connector leakingReasonPoor connection of power plug ... Schematic diagramBefore each use, PLS check high-pressure pump whether the hose is normally no damaged, ...