[V8] My brakes, what am I doing wrong??

[urq]

If you are not getting any flow when pressure is applied to the reservoir my
first suspect would be that the piston in the master cylinder is not fully
to the rest point.  There is an equalization port which is opened when the
piston is fully released which allows the any imbalance in a hydraulic
circuit to equalize.  This is the "automatic adjuster" if you will.  If the
equalization port never opens you may well find that at first you can get
fluid out the calipers when you press the brakes at first, but over time the
amount will decrease.  

You indicated that you have replaced the brake booster, my suspicion is that
there is some sort of problem remaining from reassembling the system.  Are
you sure that the booster and master cylinder are properly aligned?  If
possible, loosen the master cylinder from the booster and pull them apart,
then see if your pressure bleeding setup works.  

Steve Buchholz

-----Original Message-----

I finally finished replacing the brake servo and rear calipers on the silver
car, so yesterday I was able to bleed the brakes (swapping in SS lines as I
went), but I must be doing something wrong.  My boss has a pressure bleeder
for his Porsche, so I borrowed it to assist with the bleeding, but I could
hardly get anything to come out of the calipers.  I followed the sequence
described in the manual, keeping the gauge around 10psi, but very little
fluid would come out of the calipers.  When I got back to the right rear
brake no fluid came out at all.  I had to have my roommate help me do it the
old fashioned way (pump the pedal a bunch then hold it while I open the
valve and close it again), but I was under the impression that the pressure
bleeder made that not necessary.  I drove the car around the block and it
stops much better than it ever did before, but the pedal is still VERY
squishy and the BRAKE light is still on.

I'm getting pretty frustrated.  The car's been sitting for well over 6
months and even when the brakes are done I still need to do the shocks and
cv boots, before it will really be safe to drive.

Seamus
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