Akiralx

My 2000 A3 used to spray water on the rear window as soon as I pushed the
stalk forward - now I have to hold it forward for 5 secs, when I can hear
the power activating but no water immediately.

Any ideas as to the cause? The reservoir is totally full and I have cleared
the nozzle with a pin. For what it's worth the front nozzles work fine. I
can't see how a blocked water line would cause a delay, surely it would just
not work at all?

Thanks

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Alex