Finally removed Hydrovac from truck. When I removed the bottom vacuum line that runs up to valve on firewall and then into intake, a considerable amount of fluid ran out of hydrovac. I then tried to blow into that line and I could easily blow through it. When I tried sucking on line there was nothing. I assume that means the valve is operating correctly. Two weeks ago I found someone who can rebuild the unit here in Pittsburgh and he told me to use that method to check valve.
I guess that explains the excessive smoke. The cost to rebuild is $340.00 I assume that's about right? Brian M
