View Brake Pedal Sinks To Floor Background . This means the brake pedal might have to travel downward beyond its normal throw and you might find the brake pedal goes to floor. If your brake pedal sinks all the way to the floor when you press, there can be many possible culprits for this problem. The Symptoms Of A Bad Brake Booster Or Master Cylinder from scanneranswers.com If i release the pedal it comes back up and hard. I panicked and started pressing on the emergency brake and swerved to get out of her way. Sunk right to the floor!! Either way, your brakes need. The brakes work well stopping the car with no issues. I didn't bleed the brakes and i didn't open any bleed screws so i'm assuming no air got in the system. On very hot day, my foot brake pedal sinks to floor on stop position but it stops ok. Understanding why this happens is vital to preventing it. ...