What are the reasons for the truck water sprayer not spraying water?

[DePreston]

Truck water sprayer not spraying water can be attributed to the following three reasons: 1. The spray pipe (made of plastic) is clogged or the spray pipe (made of iron) is clogged. Solution: Use appropriate methods to clear the clogged pipe in a timely manner. 2. The water tank is out of water. Solution: Refill the water tank promptly. 3. The water spray solenoid valve is damaged. Solution: Replace the water spray solenoid valve promptly. 4. The water spray air pressure is set too low. Solution: The water tank air pipe is connected to the air reservoir. There is an air pressure regulating valve. Turn it clockwise to increase the air pressure and counterclockwise to decrease it.