Brake booster going out?

Hey all, just wanted to make sure I'm on the right track before I buy any parts. Car is a 72 Duster, 318 3-speed manual with front Kelsey-Hayes disks and rear drums.

The issue: power brakes are pretty much gone. Ton of pedal pressure to get the car to stop. Replaced the vacuum hose to the intake cause it was pretty old. Issue persisted. Checked vacuum at engine and its 19-20in at idle so plenty. When I press the brake in I can hear it hissing and releasing pressure. It also doesn't seem to...

Brake booster going out?
Author: admin