Exhaust manifold - removal and refitting
Removal
1 Disconnect the battery negative lead.
2 Remove the air cleaner and pull the hot air pick-up pipe from the exhaust manifold hot air shroud.
3 Remove the securing screws (1 screw on DOHC models, 2 screws on SOHC models, 3 screws on CVH models) and lift the hot air shroud from the manifold. Note the position of the coolant hose bracket which is secured by the front hot air shroud securing screw on SOHC models (see illustration).
26.3 Exhaust manifold hot air shroud showing securing
screws (1 and 3) and coolant hose clip (2) - SOHC models
4 Unscrew the securing nuts, and disconnect the exhaust downpipe from the manifold (see illustration). Recover the gasket. Support the exhaust downpipe from underneath the vehicle, with an axle stand for example, to avoid placing unnecessary strain on the exhaust system.
26.4 Unscrewing an exhaust downpipe securing nut
5 Disconnect the HT leads from the spark plugs, if necessary identifying them for locations, and place them to one side out of the way.
6 Unscrew the eight securing nuts, noting the location of the front engine lifting bracket secured by the front two nuts on SOHC models, and lift the manifold from the cylinder head. Recover the gasket(s) where applicable (see illustrations).
26.6a Unscrew the exhaust manifold securing nuts . . .
26.6b . . . noting the location of the front engine
bracket . . .
26.6c . . . and lift off the exhaust manifold - SOHC
models
26.6d SOHC models have separate manifold gaskets for
each exhaust port
Refitting
7 Refitting is a reversal of removal, bearing in
mind the following.
8 Ensure that all mating faces are clean, and renew all gaskets. Note that on CVH models, no gasket is fitted between the manifold and cylinder head in production, but a gasket must be used when refitting. Where applicable, remove the plastic spacer from the rear manifold stud before fitting the gasket (see illustrations).
26.8a Exhaust manifold gaskets in position on cylinder
head - DOHC models
26.8b Remove the plastic spacer (arrowed) before
fitting exhaust manifold gasket - CVH models
26.8c Fitting the exhaust manifold - DOHC models
9 Tighten the manifold securing nuts progressively to the specified torque, and similarly tighten the exhaust downpipe securing nuts. Do not forget to fit the engine lifting bracket on SOHC models.
10 Ensure that the HT leads are reconnected to their correct cylinders.
See also:
Rear suspension leaf spring (P100 models) - removal and refitting
Note: All self-locking nuts and spring washers
must be renewed on reassembly.
Removal
1 Chock the front wheels, jack up the rear of
the vehicle and support on axle stands placed
under the side me ...
Brakes
Your service brakes are self-adjusting. Refer to the scheduled
maintenance guide for scheduled maintenance.
Occasional brake noise is normal and often does not indicate a
performance concern with ...
ESC II system components - removal and refitting
Note: Procedures for removal and refitting of
the ignition system components and
electronic module are given elsewhere in the
relevant Sections of this Chapter.
1 Disconnect the battery negative l ...