Very weak windscreen washers.

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30 Oct 2007
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Essex
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United Kingdom
I have a 2019 Honda Jazz. The windscreen washers have become very week, with water barely reaching the glass. Pump seems to buzz as it should, so removed jets and cleaned, soaked overnight in descaler but no difference. Water from the hose near the bonnet squirts about 6-10 feet. Is this powerful enough to show there is not a pump problem, but the jets still partially clogged? I have seen websites saying to check pump flow or pressure but they don't say how.
 
You may have a clogged filter.

For an easy first step, put a hosepipe down the filler neck to the bottom of the bottle, and let it vigorously wash out any sludge or dirt.

You could also have a blocked, pinched or leaking hose. When the jets are off, does water squirt out of the open hose ends?

You can buy new jets, though your car might have non-standard fittings.
 
Water from the hose near the bonnet squirts about 6-10 feet. Is this powerful enough to show there is not a pump problem, but the jets still partially clogged?

The jets, are the smallest part of the system, and so much more inclined to debris blocking them. A bit of fuse wire, will clear the jets without damaging them, or if you have access - an airline, blowing through from the jet outlet.
 
Thank you all. I will try the hosepipe trick this weekend. Water does come out the hoses without the jets but don't know if it is enough. Two jets are about £50, ouch. Will try more descaling. The out end of the jet is big and clear. The in end was impossible to find the hole. The rear washer has its own pump and is ok. Thanks again.
 
Empty the water tank, fill with half litre of white wine vinegar and 1.5 litre distilled water.
Use washers every time you get the car out and within a few days everything will work again.
 
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