aaa... u've got a very common problem dogar sb... but thats a small one... every car has gotthis cz we don't bother using this feature in our cars...
it occurs cz hard water we use in our bottles gets evaporated leaving behind powdery salts which block those washer nozzles...
its damn simple. just get a syringe, suck in some drain opener acid into it and pour it into the nozzles. leave for 10 min and then tap onto a table...
and before u use ur system, drain some water from those black pipes which are fized onto the nozzles... white salts will come out...
fix them back
don't use them YET.
pop the hood.
find a straight and a T shaped joint in the rubber pipes. both joints are simply small plastics. remove those rubber pipes from them, throw out some water. salts will be stuck in those joints as well...
and now, its better to replenish the whole water in the bottle....
take a jug, dissolve some shampoo in the jug until it makes good foam and shampoo gets completely mixed...
pour this into the washer bottle...
and now top off with clean water. if possible, use boiled and then cooled water to minimize the amount of salts and hardness.
ur system will become as good as new, inshAllah.
NEVER pour shampoo directly into the washer bottle. it will clog ur nozzles again.
Always prefer NOT to use simple water..
shampoo removes hardness from water and also helps loosen dirt on the windshield.
Moreover, the necessary lubrication for the wiper blades to slide onto the screen is also provided....
i hope this helps...
cheers...