Hi there, I have an intermittent problem. On my 96 vectra the rear wash works ok and you can hear the motor running. However, the front washers fail to work and a faint buzz can be heard from the motor. My questions are these: How can one work without the other when the same motor delivers fluid to both the front and rear windows? Could the problem be caused by the two outlet valve which really answers question one, but I just want to know how this valve works? Is the problem likely to be caused by those funny little "one way" line valves not letting the fluid through I the first place, thus putting stress on the motor causing the strangled buzz sound? It seems to be going in the direction of said motor, and I ain't really got a lot to loose other than £7 on e-bay. Just thought I would ask some enquiring type questions. Regards CF