How to Bleed Brake Fluid?

[StSophie]

When replacing brake fluid, the method for bleeding air is as follows: 1. First, suck out the fluid from the brake fluid reservoir before refilling it. Once full, attach a hose to the bleeder screw on the wheel cylinder. Start the car and press the brake pedal directly; this will allow the old fluid in the lines to be expelled and replaced. Ensure the brake fluid reservoir is constantly topped up during this process to prevent air from entering. If air accidentally enters the lines, it must be bled out because brake fluid is incompressible, whereas air can compress. The presence of air can reduce braking efficiency. 2. Locate the small bleeder screw on the brake wheel cylinder (the braking component on the wheel). One person should pump the brake pedal several times, while another loosens the screw. A mixture of brake fluid and air will be expelled. Once only brake fluid comes out, the air has been successfully bled from the system.