brake failure!

[threlevenguy]

my 87 325's brake pedal is just droppin to the floor..i think its the master cylinder..anyone replaced one before?

[MikeE30325i]

nah i havent, but it shouldnt be too difficult. just be careful with spilling brake fluid. it will do some damage.......

[Nick]

You could also have a break in the lines.
Get a friend to help you check for leaks in the brake lines outside.

[cthulu703]

You should be able to do it in an afternoon. Get a brake line wrench if you don't already have one.

[turbo_negro69]

You could also have a break in the lines.
Get a friend to help you check for leaks in the brake lines outside.

+1
before you go replacing parts, look for the leak. make sure you don't just throw parts at your car trying to fix something that could be a very simple problem.