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Brakes no respond after hard braking

 
Old Apr 21, 2019, 03:28 AM
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Brakes no respond after hard braking

Last night i was doing some casual fast driving with quite a number of hard brakings. After awhile of hard braking, the brakes did not respond at all. The brake pedal literally went all the way to the firewall and the car didnt stop. I had to press the brake pedal a few times only then theres some sort of pressure at the pedal.

Ive also had to stop the car and after it rests for like 10-15 mins (idling) the brake pedal response is back to normal.

Ive checked the pad and its thick and the brake oil level is at its level.

What could have caused it and how could i fix it? It scared the **** out of me when you want the car to stop and the pedal had no response at all after a number of hard braking.
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Old Apr 21, 2019, 05:30 AM
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Sounds like you may have over heated the brake fluid & introduced air bubbles into the system

What brakes are you running? What fluid are you running?
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Old Apr 21, 2019, 08:32 PM
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Originally Posted by MinusPrevious View Post
Sounds like you may have over heated the brake fluid & introduced air bubbles into the system

What brakes are you running? What fluid are you running?
i'm using the stock EVO 8 MR brembo brakes. as for the brake fluids i'm not so sure what was filled on the last service. The fluid level is normal though when i checked.
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Old Apr 22, 2019, 12:08 AM
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I don't believe you introduced air but maybe boiled the fluid. The fix here is better (dry) brake fluid. Check the boiling point listed on the container. Off the shelf fluid is pretty low.
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Old Apr 22, 2019, 02:10 PM
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Yes. Start with a fluid change. Keep in mind that brake fluid is hygroscopic- it absorbs moisture from the air. As it becomes more and more saturated, its boiling point goes down. When the fluid boils, it becomes compressible and is no longer able to transmit the force from your foot to the brakes.
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Old May 15, 2019, 09:46 PM
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Sounds like a combination of over heating the fluid and brake fade. Different compound pads will perform better with heavy braking as they stand up to the heat better.
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