Question: 1967 power brakes master cylinder

[oagusti]

Master cylinder make a gurgling noise when pressed inside the car. Brakes otherwise seem ok.

Failing master cylinder??

 

[Tom Bryant]

Any sign of leaks inside or outside of the firewall? Fluid full? Watch the fluid inside the MC with the lid off when someone pushes the brake pedal. It could also be that brake fluid has leaked from the MC into the booster. Pop out the check valve and have someone push the pedal down while you listen.

Tom