Manifolds, exhaust and emission control systems

All models utilise a light alloy inlet manifold which on carburettor models is coolant heated to improve the atomisation of the fuel/air mixture.

The exhaust manifold is of cast iron construction and incorporates a heated air box as part of the air inlet system on carburettor models.

See also:

Carburettor (Weber 2V type) - fast idle speed adjustment
1 This procedure does not apply to models fitted with a carburettor stepper motor, for which no adjustment is possible. 2 Check the idle speed and mixture. The idle speed must be correct before at ...

Oil pump - removal and refitting
Removal 1 Remove the sump. 2 Unscrew the bolt securing the pick-up tube and strainer to the cylinder block (see illustration). 30.2 Unscrewing the oil pick-up tube securing bolt 3 Using a suit ...

Engine valve clearance check (Every 12 000 miles (20 000 km) or 12 months)
SOHC engines 1 The valve clearances must be checked with the engine cold. On carburettor models remove the air cleaner. 2 Disconnect the HT leads from the spark plugs and release them from the cl ...