Date registered: Oct 2005
Vehicle: 1966 250SE Cab, 1989 500SEL euro
Mentioned: 1 Post(s)
Quoted: 26 Post(s)
Well, start with what you have. No such thing as a "280D" - so either you have a 280E with a gas engine or a 300D with a diesel engine. Vaccuum controls a lot on these cars, and if you've got vaccuum leaks, you need to get those rectified.
It sounds like you have a w123 body style car - start with searching vaccuum pumps and diagrams in the w123 Forum. Welcome!
1989 500SEL ECE
1966 Mercedes 250SE Cabriolet
1958 BMW Isetta 600