Originally Posted by beauforty
Same thing happened to me. Took it into garage and they fixed it for me... I'm not joking, they told me not to use tap water!! It blocks the jets!! They said to use filtered water or boil the water first!! I'm really not joking.
It is apparently a known problem that normal tap water eventually blocks the jets. What do you expect from a BMW? It does say use only natural spring water in the manual such as Evian or Volvic!!
They are actually telling you the truth there, Paul!
Calcium salts in hard water does gradually form deposits in the water container & will eventually build up & block the jets.