have been having problems with my door locks, and my motor won't shut off when I take the key out of the ignition.
My father has been working on European cars since the 70's so he knows how to fix this stuff, but the only problem is He won't set aside some time to work on my car so I have to do it myself. I need to know how to find and stop a vacuum leak, I have all my fathers tools at my disposal.

I'm driving a 1984 300D W123