Needle point in the tiny hole, or take off the head and blast with an airline if you have access to one
Might just buy some canned air for that purpose. It’s a massive PITA and frankly dangerous that they’re inoperable .
check the pipes also - happened to me once that a pipe had become disconnected and the pump was just distributing my washer fluid all over the tarmac
@Nef started
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Needle point in the tiny hole, or take off the head and blast with an airline if you have access to one