Carburettor (Pierburg 2V type) - fast idle speed adjustment

1 Check the idle speed and mixture adjustment. The idle speed must be correct before attempting to check or adjust the fast idle speed.

2 With the engine at normal operating temperature, and a tachometer connected in accordance with the manufacturer’s instructions proceed as follows.

3 Remove the air cleaner.

4 Position the fast idle speed adjustment screw on the lowest (6th) step of the fast idle cam (see illustration).

21.4 Fast idle speed adjustment - Pierburg  2V
21.4 Fast idle speed adjustment - Pierburg 2V carburettor

Screw (arrowed) should rest on lowest (6th) step of cam

5 Check that the fast idle speed is as specified. If adjustment is required, stop the engine and proceed as follows.

6 Remove the tamperproof cap from the fast idle speed adjustment screw.

7 Ensure that the adjustment screw is still resting on the lowest step of the fast idle cam, then open the throttle so that a small screwdriver can be used to adjust the screw from below the carburettor.

8 Start the engine and recheck the fast idle speed.

9 If necessary, repeat the procedure given in paragraphs 7 and 8 until the correct fast idle speed is obtained.

10 On completion of adjustment, stop the engine and disconnect the tachometer, then refit the tamperproof cap to the adjustment screw, and refit the air cleaner.

    See also:

    Front disc pads - renewal
    Warning: Renew both sets of front brake pads at the same time - never renew the pads on only one wheel, as uneven braking may result. Note that the dust created by wear of the pads may contain as ...

    Wheel sensor (ABS) - removal and refitting
    Note: A new O-ring must be used when refitting a sensor. Front wheel sensor 1 Apply the handbrake, loosen the relevant front roadwheel nuts, then jack up the front of the vehicle and support on a ...

    Rear window wiper motor - removal and refitting
    Hatchback models 1 Disconnect the battery negative lead. 2 Remove the wiper arm. 3 Open the tailgate; remove the trim panel. 4 Unscrew the earth lead and disconnect the wiring plug from the motor ...