1985 Mercedes W123 300TD - Vacuum Modulator leaking & isolation

Trying to work out the reasons that my car’s engine won’t turn off. Smoke tested the system today and found the gearbox modulator leaking. So I isolated it and hey presto the engine stops and all the locks work! Now to change the mod unit.

[@siffrewillaert6271]

ᑭᖇOᗰOᔕᗰ