I am just wondering if your vacuum boosted brakes are hard as a rock or hard for a second or two and then fade off. I am trying to figure out if this is normal or if it is possible to have a rock hard pedal with vacuum boosted brakes.

 

firm with good break response.... get a vacuum gauge ... hook it inline and watch it as you drive and brake ..

 

mine had occasional hard peddle with poor stopping...found big *** vacuum leak...all good now