I too have been experiencing similar issues, that began back in October, following refilling the washer bottle. I replaced the check valves - no change. I soaked and cleaned the nozzles - no change.
The flow from the hose was strong when disconnected from the nozzles etc.
I swapped the pipes over on the pump so that the front washers operated when the stalk was set to wash the rear window but still no / poor spray from the front nozzles.
When I originally refilled the washer bottle I noticed it took ages to fill ie the filler neck of the bottle filled up then gurgled down slowly into the bottle.
I unbolted the fixing for the washer bottle when I refilled the bottle again last week and raised it as I poured screen wash in. It flowed in perfectly so I fitted a spacer to lift the neck up.
Since then my washers have worked perfectly!
This may be of no use to anyone but it’s the strange tale of my washer woes!
Rich
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