We tested all of that only to find the line coming from behind the engine was a weak vacuum. We worked our way back to that and discovered the other vacuum line coming from behind there and going to the fuel rail. There were no leaks in the lines or at the connections. The check valves all seem good. I'll replace the actuator and see what happens from there. Since we switched the 4x4 system to the stronger vacuum all should be good then I hope. Then I have to figure out the damn intermittent stiff steering issue I have!
Thanks for the reply