[Mgs] Master cylinder - size of ports -1600 MKII

[Paul Hunt]

Ha!  For some reason I assumed it was a B, and not only that but a later B
with mechanical switch instead of hydraulic.  If it's just one caliper then it
will be the flex hose, but if on both then either both hoses have failed at
the same time, or it must be something common.  With any system you should be
able to push the caliper (and rear slave) pistons fully back to displace fluid
into the master reservoir, but watch it doesn't overflow as the non-silicone
fluids will strip paint.  With the brake pedal released there should be a
pathway from each caliper or cylinder back to the master reservoir, to release
any pressure from heat expansion of fluid if nothing else.

PaulH.
  ----- Original Message -----
  Your mention of the brake light switch, even though on the A it's hydraulic
and not mechanical, has pointed out to me an easy to reach place where I can
release the pressure in the system without having to get under the car....