The function of the car washing pipe and nozzle assembly
The car washing pipe and nozzle assembly, simply put, is responsible for accurately spraying the cleaning solution to the designated areas (the front windshield or the headlights), ensuring clear vision and normal lighting.
The entire system has a clear division of labor: the washing pipe is responsible for transportation and guidance, while the nozzle is responsible for transforming the liquid into the appropriate form and spraying it out. The coordination between the two determines the cleaning effect.
The function of the washing pipe (water pipe)
Transportation channel: Connects the water tank (water jug) and the water pump, sending pressurized glass water or cleaning solution to the nozzle position.
Withstand pressure: In high-pressure cleaning equipment, the washing pipe needs to withstand high pressure. Usually, it has reinforced structures (such as steel wire weaving) and wear-resistant layers to prevent rupture and leakage.
Layout guidance: The routing of the pipeline is designed to ensure that the cleaning solution can accurately guide to the nozzle near the windshield or the area near the headlights.
The function of the nozzle assembly
Control spray form: The nozzle determines the shape and force of the liquid spray. Common types include:
Straight nozzle: The contact point has high pressure, suitable for cleaning narrow gaps.
Fan-shaped nozzle: The contact area is large, with high cleaning efficiency, suitable for large-scale cleaning.
Fog nozzle: Pressurizes the glass water and sprays it out in a fog-like form, combined with the wiper to clean the front windshield.
Rotary/high-pressure nozzle: Used for high-intensity cleaning, with high pressure and high efficiency.
Precise positioning: The installation position of the nozzle is calculated (such as below the front windshield, near the wiper arm, or below the headlights), ensuring that the water flow can precisely cover the surface to be cleaned.
Special functions: Some nozzles have heating functions, used to prevent freezing in extremely cold environments; the headlights cleaning nozzle also adopts an extendable design, retracting automatically after use to maintain the vehicle's appearance.
Common problems and maintenance
Blockage: After long-term use, sediment in the water or dust accumulation may cause nozzle blockage, manifested as poor water flow or misaligned spray direction.
Clearing method: Use a fine needle or compressed air gently to clear, do not use sharp metal objects to forcibly clean, to avoid damaging the internal structure of the nozzle.
Winter anti-freezing: It is essential to use anti-freezing cleaning solution, as ordinary tap water may expand and crack the pipeline or freeze the nozzle in extremely cold weather.
Regular inspection: It is recommended to inspect the liquid level, spray effect, and pipeline condition of the water spraying system once every six months, ensuring that the joints are tight and there is no leakage.
Common problems with the car washing pipe and nozzle assembly usually include nozzle blockage, pipe blockage or damage, pump or fuse failure, etc. Check the problem from the outside to the inside, from easy to difficult, and most can be solved by oneself.
First, determine the type of fault
No water spraying and no motor sound: First check if the water tank is empty, then check if the fuse is burned out, and finally check the motor itself.
Can hear the motor sound, but the water spraying is weak or no water spraying: It is mostly nozzle blockage, pipe blockage, or pump blade slipping, or internal problems of the motor.
The spray direction is skewed or the water flow is dispersed: It is mostly nozzle angle deviation or partial blockage, adjusting the angle or clearing can solve it.
Check the water tank level first: Open the hood to find the water tank, if the level is too low, directly add the special water for cleaning, often it is just that there is no water.
Clear the nozzle: Insert a fine needle or a large-headed pin into the nozzle hole, rotate a few times to remove impurities. Do not use a toothpick or iron wire, do not exceed 5mm in depth to prevent damaging the internal pipeline.
Clean the pipeline: If the nozzle is clear but no water flows out, it may be blocked in the middle of the pipeline. Unplug the connecting hose and use a high-pressure air gun to blow or use a syringe to inject water to clear the blockage.
Check the fuse: Find the fuse labeled "WIPER WASHER" in the fuse box under the driver's seat, check if the middle metal wire is melted, if it is broken, replace it with the same specification (usually 10A or 15A).
Confirm the pump status: The fuse is fine but the motor doesn't turn. It might be that the motor is burned out or there is a wiring fault. In this case, it is recommended to take it to a repair shop for handling.
During winter, do not forcefully press the switch until the water is sprayed. It is very likely that the windshield washer fluid has frozen. Forcefully repeatedly starting the motor will overload it and it might be burned out within tens of seconds. One should wait for the ice to naturally melt or pour 40℃ or below warm water to thaw it, and then replace with anti-freeze windshield washer fluid.
Prevention is more important than repair.
Only use special windshield washer fluid: Tap water contains a lot of minerals and can form scale in the nozzle within 3 months, with a blocking probability of up to 60%.
Spray once every month: Spray the windshield washer fluid until it is almost empty and then add new fluid. Use the water flow to wash away impurities in the pipeline.
Regularly inspect the pipeline: Check if the hose is bent, damaged, or leaking. If the interface is loose, re-fix it. Replace it in time if it is aged or cracked.
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