Just had front brakes replaced with used SA calipers and new rotors on my 1992 500e Euro along with new LCAs. I left the rear brakes and calipers stock. Much to my dismay I now find the braking to be worse than before. There is excessive pedal movement ~ 3/4 of total travel and braking is poor. I have to pump the pedal and even in doing this the car barely stops.
I did not have this condition with the old brakes. Is this a symptom of the master cylinder seals going? I had read that the master cylinder is sufficiently large to accommodate the SA larger caliper but given the poor performance maybe that's the fix.
Any help with diagnostics or suggestions appreciated!
All the best,