I had the hard pedal almost no brakes problem recently and sent the booster to ‘Booster Dewey’. It came back looking like new. I installed a master cylinder from Dr Diff in front of it and now the brakes work again.
Yeah when I got it back the brakes were ok, but not optimal so I called him and he said it takes 20 inHg to operate it efficiently and I had 14-15 so I opted to use a vacuum canister and hide it. How much vacuum do you have? Have a cam?
