Used Mercedessource repair manuals and vacuum pump to find vacuum loss on green line going into firewall. Comment in manual suggests this is vacuum line to Climate Control. Not sure this car ('81 240D) has climate control.
Pulled instrument cluster and could see vac line going into upper center of dash. What does it connect to and where would I find it? I hate to start pulling the dash only to find it was a simple repair if I had just known where to look...
Thanks!
TC