Questions & Answers for: brake hissing

...hissing from brake pedal area. On tapping pedal it would stop. Now hissing very loud and does not stop when tapping pedal. Please can you advise Sue Bayly Hissing or scratching sound is usually ...

brake. The hissing is louder inside the cab than outside, it sounds like a vacuum leak. Under the hood, the big drum bolted to the firewall looks pretty rough, the paint is peeling off the lower half

...on the brakes, but when I let go of the brakes it starts hissing. Please help and let me know what could be the problem.Thanks. sounds like your brake vacuum line or brake booster is leaking ...

...booster is going bad makes hissing sound when brake applied.But should not make any kind of air leakage noise at all.Replace brake booster.Hope this was helpful for you. Could be the brake

...hissing at brake peddal when applying you need a brake booster Brake booster is not boosting air to your brakes the hissing sound is the air hissing out of the booster.Your brake fluid leaking that ...

...Hissing is more associated with a failing brake booster. Since it uses manifold vacum developed by the running engine, you will hear a hiss as the engine tries to restore the lost vacum. Hello ...

...hissing sound Put new brake pads & bled them. still no brakes & making a hissing sound. What could be wrong?? where is hissing sound coming from under hood or behind tire the brake booster is ...

...hissing noise? IT is probably a vacuum leak in the brake booster. With the pedal going to the floor There is either no brake fluid or you will have to bleed the system. Replace the booster and bleed ...

...hissing sound and pedal goes to floor The hiss sounds like the power brake booster has failed.....but usually that only causes the pedal to get hard. A pedal that goes all the way to the floor ...

brake pedal the hissing sound reduces a lot Check the large vacuum hose from the booster to the engine intake if the hose is good disconnect it at the booster and plug the hose if the hiss is gone the