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How do you tell if a master cylinder is bad or if you need to replace brakes?

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βˆ™ 2015-07-15 19:38:25

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Start the car. Place you foot on the brake and hold steady pressure. If the brake pedal slowly moves toward the floor, you need to replace the master cylinder.

2015-07-15 19:38:25
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When you first push brake pedal down it goes straight to the floorI need to pump brakes several times to get it to resume normal pressure 2003 silverado?

First thing I would do is check the fluid level in the Master Cylinder, and bleed the brakes. Start at RR, then LR, RF, and end up at LF, making sure you keep the Master Cylinder full at all times. If that does not help, replace the Master Cylinder.First thing I would do is check the fluid level in the Master Cylinder, and bleed the brakes. Start at RR, then LR, RF, and end up at LF, making sure you keep the Master Cylinder full at all times. If that does not help, replace the Master Cylinder.

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