Yeh, it's in my garage after I took it out of my Lada Riva.....
Does the GP have jets (how many) or a spray?
That explains it, in German misst is poo. Hence the old German gagit has 2 jets/sprayers on a plastic panel at the top of the bonnet. They are mist jets so cant be adjusted.
Please note: I have no connection with Lui other than being a very satisfied customer!!!
(and after being asked by Fiat Customer Care "why did you buy the car if you didn't like the washers"!!!)
Yep, my GP had just this problem - also, the washer reservoir was so small that I would run out of washer fluid after 10 miles!
Problem was fixed by Lui's LB Autos in Somerton Lui abandoned the old jets, affixed new (adjustable) ones,!