How to Determine if There is Air in the Brake Fluid?
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Methods to determine if there is air in the brake fluid are: 1. Start the vehicle and press the brake pedal forcefully; if it sinks all the way to the floor, this indicates the presence of air. 2. After starting the vehicle, press the brake pedal; if the first press feels unusually low but returns to normal after a few presses, and if releasing the pedal for a few minutes and pressing it again restores normal function, this also indicates the presence of air. The method to bleed air from the brake fluid is: 1. Press the brake pedal continuously 5 to 6 times. 2. Keep the brake pedal pressed down, then immediately loosen the air bleed screw on the right rear wheel brake caliper and quickly tighten it again. 3. Repeat this process until the brake fluid shoots out in a straight line from the air bleed screw. Brake fluid, also known as hydraulic brake fluid, is a functional liquid in the vehicle's braking system that transmits pressure to enable the braking action on the wheels. Brake fluid does not undergo chemical reactions, is unaffected by high temperatures, and does not corrode, soften, or expand metals and rubber.