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:

Contact breaker points adjustment - models with contact breaker distributor (Every 6000 miles or 6 months)
1 Spring back the retaining clips or undo the screws as appropriate and lift off the distributor cap. 2 Withdraw the rotor arm from the distributor shaft. 3 Using a screwdriver, gently prise the ...

Deceleratio sensitive valve (all models with conventional braking system) - removal and refitting
Caution: Refer to the precautions in Section 1. Removal 1 The deceleration sensitive valve is located on the left-hand side of the engine compartment (see illustrations). 23.1a Early type decele ...

Auxiliary warning system components - location, testing, removal and refitting
Location 1 The AWS control unit, and (when fitted) the bulb failure monitor, are located behind the glovebox on models up to 1987. 2 On models from 1987, the control and bulb failure modules are ...