Crankcase ventilation system check (Every 12 000 miles (20 000 km) or 12 months)

1 Inspect the crankcase ventilation system for blockage or damage. A blocked hose can cause a build-up of crankcase pressure, which in turn can cause oil leaks (see illustration).

35.1 Loosening the crankcase ventilation hose clip - CVH models
35.1 Loosening the crankcase ventilation hose clip - CVH models

2 On carburettor model SOHC engines, clean the oil filler cap with paraffin and check that the vent valve is not blocked by pulling it from the oil separator and loosening the hose clip (Section 42).

3 On CVH engines, check that the oil separator and mushroom valve are not blocked, and clean if necessary (see illustration).

35.3 Oil separator (1) and mushroom valve (2) locations in air cleaner - CVH
35.3 Oil separator (1) and mushroom valve (2) locations in air cleaner - CVH models

    See also:

    Engine - removal leaving automatic transmission in vehicle
    Note: Refer to the warning at the beginning of Section 5 before proceeding. A suitable hoist and lifting tackle will be required for this operation. 1 Proceed as described in paragraphs 1 to 21 o ...

    Turbocharger- removal and refitting
    Note: New gaskets and new tabwashers must be used on refitting. Removal 1 Disconnect the battery negative lead. 2 Disconnect the turbocharger inlet and outlet air hoses and the hoses from the was ...

    Auxiliary drivebelt check (Every 12 000 miles (20 000 km) or 12 months)
    1 Refer to the Specifications at the beginning of this Chapter and check the tension of each drivebelt at the point stated. Check the full length of each drivebelt for cracks and deterioration. It ...