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Q: Why is air hissing when I release my brake pedal?
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Why is there an excessive and continuous hissing sound when the brake pedal is pushed?

Hissing from the brake pedals being push indicates that there is air in the brake system. It also indicates that the brake pads may be wore down and are not able to grab to stop the car.


What brake pedal is the cause of air being in the brake system?

The brake pedal has nothing to do with it. If air is in the system then bleed the brakes.


What causes brake hissing even when vehicle is stopped?

air coming out of the brake lines... that is if its a truck. if you aply the parking brake.


Why 1990 Geo Tracker brake pedal hard to press?

Hardness in the brake pedal can because by low brake fluid. Air in the brake lines can also cause the pedal to push hard.


When you release brakes you hear air?

If you're referring to an air brake system, you have a leak in a brake chamber... one of your emergency chambers has gone bad (if you hear it only when you depress the brake pedal, then it's a service chamber).


Why does brake pedal feels spongy?

air in the brake lines theyneed bleed


Soft brake-pedal movement can be caused by?

air in the hydraulic brake system


Why is the brake petal soft on your 93 Toyota 4Runner after you changed the brake pads?

You need to bleed the brakes. Loosen the bleeder valve on one of the calipers and have someone press and hold the brake pedal. Tighten the valve and release the brake pedal. (If you let off of the pedal with the valve loose, air will be drawn into the system and make the problem worse.)


Why would your brake pedal feel soft when you press it?

Air in the brake system. You need to bleed the air out of the system.


Why would the brake pedal not want to depress on my 93 Beretta and not brake You can slam on the brake pedal 3-4 times then it will work but the pedal seems to go to the floor?

dude! sounds like air brake sys.(system needs to be bled get air out of sys.)As for gettin stuck , check linkage,brake booster and master cyl.


When you press the brake pedal on your Hyundai accent there sounds like air escaping from under the dash but goes away when brake pedal released?

The power brake booster is bad.


Why a 1995 Toyota corolla brake pedal is soft when the engine is running?

Brake system has air in it.