Bleeding the brake system (Opel Omega B)

Any hydraulic system can only work effectively after all the air has been removed from it. The process of removing air from the brake system is called bleeding. When bleeding, use only new, clean brake fluid. Before bleeding, fill the reservoir with brake fluid above the MAX mark and make sure that the brake fluid level does not fall below this mark.

Pumping order

Bleeding the brake system on models produced before 1998 with a 3-channel ABS system must be carried out in the following order:

• left front wheel brake;
• right front wheel brake;
• left rear wheel brake;
• right rear wheel brake.

Bleeding the brake system on models produced since 1998 with a 4-channel ABS system must be carried out in the following order:

• left rear wheel brake;
• right front wheel brake;
• right rear wheel brake;
• left front wheel brake.

Basic method

This method requires an assistant.



1. Remove the plastic cap from the air bleed valve on the first wheel brake.





2. Place a rubber tube on the valve.

3. Place the other end of the tube into a container filled with brake fluid.

4. Check that the brake fluid level in the reservoir is above the MIN mark and ask an assistant to press the brake pedal several times and leave it pressed.

5. Unscrew the bleed valve (about one turn) and wait for the brake fluid to drain. When the fluid flow stops, close the valve, have an assistant slowly release the brake pedal and check the fluid level in the reservoir.

(Material copied from the portal: opelbook.ru)

6. Repeat step 5 until there are no air bubbles in the escaping brake fluid.

7. Tighten the bleed valve securely, remove the tube and replace the cap.

8. Repeat the bleeding operation on the brakes of the remaining wheels.

Bleeding using a one-way valve kit

The rubber tube of such a kit has a one-way valve that prevents air and old brake fluid from getting back into the brake system. The kit may also include a container for collecting old brake fluid.

Bleeding using a pressure bleeding kit

With the pressure bleeding kit connected to the brake fluid reservoir, bleeding the system is as simple as opening the bleeder valves one at a time to drain the old brake fluid and release air.

Examination (all methods)

After bleeding is complete, rinse off any spilled brake fluid, tighten the bleeder valves securely, and install the caps on them. Check the brake fluid level again.