How to fix windshield washer fluid hose is simple, but it is crucial to understand its system. Clogged or cracked hoses are some of the reasons the washer fluid will fail to reach the windshield.
Thank heavens, even beginners can apprehend how the windshield washer system works and replace the fluid hoses.
Ideally, the system has a pump and washer bottle. It also has a fuse and a switch that pushes the fluid through a nozzle to the windshield.
Urgent diagnosis of the system is necessary to avoid inconveniences while driving. Read on to find out how to fix a windshield washer fluid hose and diagnose the system.
How to Fix Windshield Washer Fluid Hose
1. Inspect the fuse
The fuse controls the windshield washer pump motor. You can find it using your car’s manual if you are unsure of its location.
Start the car and engage the washer. Listen for whirring sounds from the pump to find out if the fuse is functional.
If you don’t hear any sound, chances are that the fuse is dead or faulty. Also, if it has a split, replace it. If it fails again, get a new motor, or have a mechanic check the entire windshield washer system.
[amazon box=” B07NVFV883″ grid=”1″]
2. Check the power supply
If the fuse is working, but the pump doesn’t run, use a digital voltmeter to confirm that the volt reading is 12 volts. Sometimes poor electrical connection at the pump can be the problem.
[amazon box=” B01ISAMUA6″ grid=”1″]
Also, operate the washer pump switch and check its wiring. You can clean and coat the terminals with dielectric silicone grease if they are loose. If this doesn’t restore power, take the car to a garage for a professional wiring checkup.
3. Check the fluid reservoir and pump
An empty washer fluid reservoir will often make you think the hoses are faulty. More so, it is a primary cause of pump failure.
Most modern car manufacturers mount the washer pump and reservoir behind the engine compartment. The pump can also be near or inside the fluid reservoir or hidden inside the front fender.
[amazon box=” B08BC8PBRC” grid=”1″]
Release the retainer clips or rings to remove the washer pump if the reservoir is inside the engine compartment.
You can also follow the windshield washer tubing to access the reservoir and pump or remove the wheel line fender liner.
It is advisable to check the tank often and refill it to avert costly repairs in the process of how to fix windshield washer fluid hose.
Read also: Spray to stop windscreen freezing
4. Clear clogged washer nozzles, reservoir, and tubes
Some problems with the windshield washer hoses result from clogged nozzles. You will note this if you hear the pump whir, but it doesn’t produce fluid. The fluid quantity flowing from the nozzles can also reduce or come out unevenly.
[amazon box=” B07GGLGTF5″ grid=”1″]
You can disconnect the tubing and push a small pin in the nozzles to poke and loosen debris.
You can also clear the tubes by compressing air through the holes’ ends to blow out debris backward. If this fails, use a toothbrush and warm water to scrub the nozzle.
For the reservoir, empty it and flash water to remove dirt. Change the windshield washer fluid if the one present is dirty.
[amazon box=” B00U468SV8″ grid=”1″]
5. Check and fix the windshield tubes
The tubes that transport fluid from the reservoir are clear or black plastic. They are subject to engine heat and can get brittle after some time.
Inspect them for tears or rips. You can have someone activate the washer fluid as you check the hoses for leaks.
Sometimes, a damaged hose will not require a replacement.
You can cut the worn-out part with a pair of pliers and insert a 6mm fuel hose before securing it with clips or cable ties. Also, you can mend the hose with a non-adhesive rubber automotive tube.
Unfortunately, this technique will only last for a short while. It is again ineffective if the tear on the tube is too large.
Overlooking to replace a faulty hose will only further the damage to the washer system. The best option to fix a windshield washer hose is to fit a new one.
Jumping off, open the hood and locate the tubing that runs from the nozzle to the washer fluid reservoir. Use your hand to disconnect the tube from the pump or leverage a flathead screwdriver to unscrew the retainers first.
Remove the hood underside insulator’s retainers gently. After removing the retainers, pull out the tube from the nozzle and mount a new one.
Reinstall the insulator by pressing its clips into place. Afterward, refit the hose onto the pump and nozzle and secure the retainer clips.
Read also: How to use radiator stop leak
Frequently Asked Questions about Fixing Windshield Washer
Can you replace a washer pump on your own?
You can generally replace the washer pump, but it is advisable to check the replacement guidelines on a direct-fit auto part manual. Ensure you follow the instructions on the new pump you want to install.
What causes the windshield reservoir or tube to clog?
If you use regular water instead of washer fluid, the reservoir and tube can develop molds, restricting the flow of the liquid to the nozzles. Also, tap water contains impurities and can freeze in cold temperatures, clogging the nozzles.
How can you prevent windshield fluid from clogging the hoses?
Use an all-season windshield fluid with a low freezing point or ensure you keep the engine running for some minutes to melt the liquid if you live in a cold area. You can also pour hot water into the reservoir or park the car inside a garage.
What causes the failure of a washer pump?
Letting the pump run while dry will make it overheat and fail. It can also break down if water gets on the terminals.
Inspect the reservoir and pump to determine if you need to unclog or replace the tubes. If you detect a problem with the power supply, consider reaching out to an expert to fix it.
Don’t work around the electrical components if you aren’t familiar with how to go about it. Otherwise, you may cause short circuits to other car parts.
Read also: What can I spray to check for vacuum leaks?