When I bought my '81 300D two years ago, someone had rerouted all the vacuum lines under the hood, and installed an electric vacuum pump for the transmission. I followed the diagram under the hood, but I have a couple of questions about the routing.

on the diagram (attached) there are 3 points that go nowhere. I have labeled them as 1,2,&3 on the pic. the way I am set up right now:
1 goes to the Break Booster (with another tap for the cabin controls).
2. is going to the vacuum modulator on the transmission.
3 goes no where.
Is this correct?

Next question:
I was doing some vacuum checks looking for leaks. The vacuum valve on the injection pump I did not get any vacuum to or from the valve at an idle. When I pulled the throttle lever the switch on the valve cover engage, then I got about 15" of vacuum. I gave it more throttle then it dropped to about 10" and stayed there. This doesn't seem right to me. Do I need a new vacuum valve?

In the pic i have labeled the connectors with yellow and orange arrows, the small green arrow is #3 above.

Attached Thumbnails

   

__________________
MC Professor

1981 300D non-Turbo
with unknown 617. motor and 711.311 transmission