My washer was late in responding and pretty weak. I removed the check valve that is between the washer nozzles under the hood. The red cap prys off easily, this is what I saw:
The rubber membrane that does the work is gone, only the outer rim is left, and some semi-dissolved gunk inside. The missing membrane causes the valve to leak fluid, that explains the weak washer function, and of course it doesn't function as a check valve, thus the delay before water gets to the nozzles. Without the membrane, this is basically a leaking t-connector. Bad. So my only option is to go to the dealer? No! Not at all, I will repair it and save possibly 10$!
This is the valve part after cleaning, possibly using a professional grade solvent which will be referred to later:
Now I need a new membrane. A dishwashing clove will do. It is resistant to chemicals and they always have holes in the fingers anyway:
You need to cut out a piece of the glove to fit the valve. You may need to use some high-grade solvent along the way. Clean something, cleanliness is next to godliness.
Then insert the rubber membrane, close the valve, install and enjoy your handiwork!
Probably this should be pinned, lets put the windscreen washer check valve factory workers out of their jobs!
Snorri H.
