When the engin e is running you have vacuum or someother power supply to give power to power brakes. Whe it is off there is only enough power left to give one, maybe two hits of the brake pedal. They will still work only will be hard to push down. If they are broke when engine is off then they will be with engine running as well.
Please consider a to help us answer more questions.
Monday, August 27th, 2012 AT 1:56 PM