So as the title states.

I have two w123's. Both are US spec, 1983 year models.

One is a 300d Turbo, one is a 240d

Both have automatic transmissions.

Here they are- the 300d is the (faded) silverblue one, the 240d is the (faded) light ivory one.




Here's the deal- i bought the 300d around a year ago for $400. I have been gradually repairing things here and there.

First line of order was making it mechanically sound- done

Then fixing up parts of the thrashed interior- done

Now i want to repair some of the vacuum system.

My transmission shifts great (at least i think so)

My door locks dont work (explained below)

My air only blows from the defrost and side vents. I have tried other ac switch panels.

Other than these issues, i do not notice any other vacuum related problems

My green/yellow vacuum line coming out of the firewall (HVAC?) is ended by a dirty piece of duct tape. no connection to the system.

My yellow check valve (door locks?) is also open to the air. I tested it with my mouth- it works.

One door lock line is severed in the door jam due to a missing door check strap. Obviously this must be repaired.

Is it possible the prev owner rigged it up like this to avoid fixing the leaks?

On to pics- since this thread is useless without them.



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Now on to the 240d.


I bought this car around 3 months ago. $150. Flood car. Has not been cranked in ~14 years. Supposedly parked due to owner not wanting to drive it anymore, it was running fine when parked, or so i was told.

I installed a glow plug relay, flushed the fluids, ran fuel out of a separate tank, changed fuel filters, and it lives. It sounds very healthy.

The bad- it doesn't want to come out of first gear. I think it did once, because it randomly slammed down back down into first, but other than that, its somewhat not drive-able due to this. Im leaning towards a vacuum issue

I believe someone had a field day on the vacuum system- alot of the connections on the valve cover are missing. See here-










My question to you all is- does anyone have one of these cars with a perfectly functioning vacuum system that they could snap me a picture of?

Or, can anyone tell me what i am missing on these two cars?

Also- where does one locate the correct lines and fittings for these?

Sorry for being such a newbie on these cars- the one i got last year is my first old Mercedes ever. I've never dealt with attempting to repair a vacuum system

Thanks in advance