I just bought a w123 300d turbo 1984 for $750. It's got 180k and runs like a new car. I've done some work to it of course but the engine was solid when I bought it. Just needed some minor things :glow plug relay fixed... etc.

Anyways... I have had the brakes go out completely about a month or two ago. I flushed the brake fluid a few weeks ago and they were much more responsive. I'd barely touch the pedal and they'd engage (like a new car). It seems they're getting weaker and weaker as time goes on. This morning I made a 1 hour drive and I had to push the pedal to the floor to get them to even work. And I mean all the way to the floor. If I pump the brakes it gets a little higher and more pressure (they also work better). But I shouldn't have to do that. What could be wrong???

I love this car but if I can't stop that's a slight problem!!