Bleeding the hydraulic clutch system (Opel Vectra B)

The bleed screw is screwed into a hose that is mounted on top of the transmission. On some models, the screw can only be accessed from underneath the vehicle.

Unscrew the cap of the feed tank and check that the brake fluid level in the tank is at the max mark. When removing air, monitor the presence of fluid in the tank, not allowing its bottom to be exposed, since this will again introduce air into the system.

Remove the dust cap from the bleed nipple and place a clean transparent hose on it, the other end of which must be lowered into a container partially filled with brake fluid.

Press the clutch pedal sharply several times at intervals of 2–3 seconds. Unscrew the bleed nipple by half a turn while pressing the pedal. Continuing to press the pedal, force the fluid in the system together with the air through the hose into the container. After the pedal reaches the extreme forward position and the fluid is no longer forced out through the hose, screw the bleed nipple all the way in.

Repeat these steps until no more air comes out of the hose.

While holding the pedal down, tighten the fitting until it stops and remove the hose.

Wipe the bleed nipple clean and install the protective cap.

Material copied from this portal (OpelBook)