how can i fix my back door of 2007 zafira,it wont open?

take off rear door panel and check connection for handle mechanism ... it may have become disconnected or clip may have snapped with age / useage

as to the window "squirter" ( im taking this to mean the window wiper fluid despencer)

check that the feed line (rubber tube ) connected to it that supplies it with fluid has not come off ... is it making a noise when you activate it ? if not chances are its knackered ... i would try a breakers yard for a replacement before buying a brand new one ... you should be able to get one for £10 from them

hope this helps

john gibson
January 2010