If you are unsure if the pump is on, ask a friend to listen from outside the vehicle near the hood. If you do not hear the pump, you can try unplugging the power connector for the washer fluid pump and check voltage at the connector, if the voltage is present when trying to activate pump then pump probably needs to be replaced. [3] X Expert Source Hovig ManouchekianAuto Repair & Design Specialist Expert Interview. 23 February 2021. If you suspect that the reservoir is contaminated and may be causing the blockage, it is best to clean it out with fresh water circulating from a hose into the reservoir. Dish soap in the reservoir may also help dislodge dirt and particles. Rinse until water runs clear out the fill opening, and soap is gone. Following this, it is a good idea to disconnect the supply hoses from the pump and from the nozzles and blow air through the hoses. Following that, reconnect the hoses to the pump and run water through the lines to further flush them.

Wipe away any wax or polish that has clogged the end of the jet.

Only press the pin in as far as you can safely remove it. Do not press the needle too hard into the back of the jet, as you may break the needle or the jet.

Guitar strings will work well for this because they offer the rigidity needed to pass up through the jet. You can also use a stripped electrical wire. You can also use teeth flossing piksters - smallest size (0) - you may need to nick the very tip of the wire off to get them to fit in the jet hole as they are ever so slightly bigger at the tip of the piksters for some jets. You insert them through the jet hole where the water comes out - not from the bottom as described above for wire - means no disassembly required and works for jets that have a 90 degree bend in the water supply connection - as in Mazdas. Their advantage is they have a brush to dislodge dirt - just keep rotating them in the same direction when you insert and withdraw so you don’t leave bristles from the pikster in the jet hole by being too rough - although they are so thin and small the water is likely to clean them out. Best to insert first then turn on the washer as you rotate and remove. You may need to repeat several times and use a couple of piksters for all jets.

Simply squeeze the hose with your index finger and thumb near the nozzle and pull backwards to remove it. If the hose is stuck, use a pair of pliers to twist it back and forth to break it loose. Try to pull in line with the fitting - it is plastic and will not take much side bending.

The jet will push straight up out of the hole in the hood with the stoppers pressed in. If you are replacing the jets, it’s okay to break the stoppers, otherwise be careful not to damage them.

If the jet gets stuck, open the hood again and squeeze the clips with your pliers to release them again. Be careful not to damage the paint on the hood as you pull the jets out.

Once the jet is rinsed, you can try blowing through it to see if the blockage is clear. If the jet is unclogged, reinstall it on the vehicle.

Connect the windshield washer fluid line to the jet once its in place. Start the vehicle and test your new jets to ensure they are working properly.

Start at the reservoir and follow the lines all the way to the jets attached to the hood. Look for signs of leaking, kinks or other forms of damage.

If the air cannot pass through the line to unclog it, you will need to replace it. If the air passes right through the line, reinstall it.

Simply attach the new hose to the same nozzles you removed the old one from. Test your jets once more after replacing the hose.