[6pack] Brake Booster

[Steve Kirsis]

Hi Guys and Gals, just noticed a definite hissing sound coming from the direction of my brake pedal when they are applied. I am very familiar with the system but not the cures. Any help with the checklist would be appreciated. It is a very original '70 TR6. Definitely an air leak sound. Continuous as the brakes are applied and stops when the brakes are released.Steve Kirsis