[Nickrod41]

I have a 1968 cougar xr-7 that I am restoring for my first car. I installed a new booster and master cylinder and I am still having issues braking. When I apply pressure on the pedal I feel the power brakes work and the car begins to stop easily. Then the pedal goes a little more than half way down and it releases the power brakes and I have to push very hard to make the car stop. It's almost like it goes back to manual brakes. I don't know what I should do. Any advice?

 

[390XR7]

did you bench bleed your master before you installed it?

 

[RayH]

You have air in the system. Did you bench bleed the master? If not you need to do that (pull it off) and follow the instructions for bench bleeding. Then re-install and bleed the brakes to remove the air in the system.

 

[Nickrod41]

No I only bled the brakes after it was installed. Thanks! I will bench bleed it and see how it goes.