Thanks for the replies gents. It turns out that the hose was plugged up pretty good. Replaced the hose and the vacuum greatly improved. However the wipers moved slowly, very slowly. I took out the wiper motor and reattached the vacuum hose to the motor and it seemed to work perfectly.
When I installed the motor back in the dash the wipers were still moving very slowly. Is there something I'm missing here, perhaps some sort of adjustment with the arms?
