What happens if the brake booster leaks vacuum, what are the symptoms?

 

car stopped at light... hold brake down... car begins to roll forward (especially if its an automatic and there is forward "Pressure" on the car??!!??)

pump brake and pedal pressure is improved.


Im guessing here....

 

You'll know it if you have a leaky booster.

Its like driving your car when the engine is off and hitting the brakes. They'll be really tough and as you hit em more and more, they will become impossible to press down.


Is your pedal sinking to the floor slowly? Thats a leaky master cylender. Replace it asap, I drove around with a leaky one for a day...scariest **** of my life.