Originally Posted by
waldig
Testing brake feel:
Posted in other section also:
Try this, engine OFF. pump the brake several times to bleed off the vacuum assist.
Now press the pedal to see the unassisted pedal feel. It should be solid and unyielding.
It should also not drift, go to the floor or other odd thing.
Has the brake fluid gone down?? have lid on when pumping brakes or expect a fountain to erupt.
Let us know, W
DY
OK, did the engine OFF step and the pedal was firm and it had the amount of pedal depression I would expect it to have, no sinking pedal at all.
When I turned on the engine the pedal sank to where it normally is, pumping it did not raise the pedal by any noticeable amount. Where did that oil moved by the extra stroke go?
I think that the brake lines would have to be open at the time so new fluid can get in as the air gets pushed out. The reservoir would have to be filled as the operation continued to prevent air getting in via the reservoir. It