I replaced front brake pads, and now hear a hissing sound behind the pedal. on 1999 Chrysler Sebring

The pedal goes all the way to the floor and my wife is afraid to drive it. I have been changing my own brake pads and shoes for many years on many vehicles and have never had this before. I am not sure if it is the booster or the master cylinder, or if I screwed up the reinstallation of the calipers. Does anyone know how to check these things. The booster looks like a real pain in the A to get to and I think it may have sprung a vacuum leak or something when I squeezed the caliper piston in to accommodate the new pads. Help Please???

by in Middletown, OH on October 20, 2013
3 answers
ANSWER by on October 20, 2013
Unless the rod that goes through the brake booster is broken in half, the booster CAN NOT cause the pedal to go to the floor!! I don't care what you have been or will be told! Recheck the work you did, there is a problem there. Once that is fixed, so should your brake system be! Did you open any bleeder screws or any lines etc?
ANSWER by on October 20, 2013
agree with pushrod also check your master cylinder cap/cover maybe not close/tight enough.
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ANSWER by on October 21, 2013
agree with pushrod
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