>> At the rear of the car (drivers side) Next to the shock of the back
>>suspension there is a little mechanism with a spring ..
[quoted text clipped - 4 lines]
>> Mark
>rear brake pressure regulator(compensator)
When I took my 306 to the local garage for a brake fluid leak, they
first checked the back brakes (assumed it was brake cylinder) and found
that this regulator was stuck. They fixed this (along with the leak,
which turned out to be a front hose - doh, I could have fixed that!),
and since then the brake pedal has been a bit odd. If I have my foot
very lightly on the brake and the car goes over a bump then the brake
pedal drops slightly. It's like the bump is moving the regulator
slightly. There's no difference in brake performance, and I'm used to it
now. Bit weird for a bit though.

Signature
Mike Buckley
RD350LC2
http://www.toastyhamster.freeserve.co.uk
BONY#38