Bleeding brakes — using a pressure bleeding kit (VW Golf 4)

When bleeding using this method, a large amount of hydraulic fluid is required to prevent air from entering the master cylinder during the bleeding process, which often occurs if the fluid level in the reservoir is not maintained.

Pressure bleeding is especially effective when the system is difficult to bleed or when a complete system bleeding is performed during a routine brake fluid change.

Execution order

1. Using a pressure bleeding kit requires a supply of compressed air, which can be done using an inflated spare tire. Reduce the tire pressure to the value specified in the kit's operating instructions.

Warning: Volkswagen recommends using compressed air supplied at a pressure of no more than 2 bar.

2. Connect a container filled with brake fluid to the master cylinder reservoir.

3. The bleeding process begins after unscrewing the bleeding nipple by half a turn.

4. After the brake fluid with air bubbles stops leaking and only clean brake fluid starts leaking, tighten the bleed screw all the way.