Originally Posted by Z4 Beemer
Guys - does it not sound like the pipes to the jets could just have a kink somewhere... the kink is perhaps forming when the bonnet lid gets closed?
Should you not also be using a screenwash of some kind rather than plain tap water? I bought Tesco summer screen wash recently which is actually quite good.
I use it as well Gordon- strangely addictive!
The screenwashes should contain water softeners to minimise the problem.