Blocked glass wax nozzles

Since mine washer nozzles are "too", I have a petrol filter, known from the mofa times, shortly before the nozzles "smuggled in". The reason is probably the intensive cleaning system, which, long not operated, forms absolutely expensive and fixed mucus. The overall pressure of the washing machine is lower, but it has been functioning for 5 months! (Tip from Porsche workshop when 911 lines are calcified!)