/p><div>yes! its highly likely your master cylinder is bad. a good way of testing<br>is to remove the reserve lid and have someone step on the brake pedal<br>in at a normal speed if you can see a small <span class="">geyser</span> come up from the reserve<br>most likely its <span class="">OK</span> if not seals inside are worn out replace also check the disc<br>brake to see if they are worn out this to can cause the same symptoms<br></div>
Master cylinder may be leaking, brake pedal may slowly fall to the floor when you are stopped with your foot on the brake.
First, make sure the master cylinder is filled with brake fluid. If it is low, there may be a leak somewhere in the brake lines or a brake cylinder. If the master cylinder is bad, you can normally pump the brakes up, but the pedal will slowly sink to the floor again. The master cylinder needs to be replaced or repaired.
Your brake master cylinder may be leaking. Have it checked by a technician.
Could be low brake fluid or just worn brakes in need of replacement. Could also be a faulty master cylinder.
A symptom you almost always feel is a brake pedal that will not hold. You stop, hold the brake, and the pedal will slowly move toward the floor. This is a sure sign the master cylinder is bad. A leaking master cylinder or one that sticks, is also a sign is is defective. When you replace the master cylinder replace all the brake fluid in the brake system and bleed the brakes. Moisture in the brake fluid will destroy a master cylinder and this may be why it failed.Brake fluid leaking from the master cylinder. When you stop and hold your foot on the break the brake pedal will slowly go to the floor. Either of these symptoms means your master cylinder must be replaced.
You ONLY lose brake pressure if you have a leak somewhere ! - This can be in any wheel cylinder , the master cylinder, or a fractured brake line. Till you find the leak, keep your master cylinder topped up daily.If the brake fluid reservoir remains full and the brake pedal sinks to the floor as you are waiting at a stop light, the master cylinder is at fault.
Master cylinder failure.
At the master cylinder which may be under the drivers floor under a panel. If you do not see it, follow the brake lines. They will lead you to the master cylinder.
The brake pedal will sink to the floor when applied and the brake fluid reservoir remains full.
If the master cylinder reservoir is empty, you have a leak somewhere. If the master cylinder reservoir is full, the master cylinder is bad.
One sign is if you place you foot on the brake pedal and apply steady pressure, and the pedal slowing goes down toward the floor, the master cylinder is bad. As this car is 9 years old, when replacing the master cylinder, replace all the brake fluid in the entire system with fresh fluid from an unopened can. 1. It could have a leak at the master cylender. 2. the brake peddle slowly goes all the way to the floor.
Master cylinder is defective. Replace it.