Vauxhall Workshop Service and Repair Manuals

Upper Idle Speed, Check and Adjust

The engine speed is read at the V-belt with the engine at operating temperature using a photo-electric cell type tachometer.

A 1 to 2 cm / 0.4 to 0.8 in. wide piece of aluminium foil should be attached to the front collar of the crankshaft pulley.

Start engine and check cut-off speed with tachometer.

Cut-off speed (max. no load engine speed)

15 D      =   5600 - 5800

15 DT    =   5400 - 5600

To prevent engine damage do not set too high.

(Illus. C 6362 shows 15 D)

Correction

Remove lead seal and fastening device.

Loosen castellated nut and turn stop screw (arrow) of engine speed control lever accordingly.

After adjusting engine speed, stop screw must be reinstalled with lead seal and fastening device.

Use Sealing Pliers KM - 153 for this.