Rover 214 & 414 Service and Repair Manual - Rover club

4B•4 Fuel and exhaust systems - single-point fuel injection engines
3 Check the condition of the throttle housing
seal and the intake duct O-ring (where fitted).
Renew either if worn or damaged.
4 To remove the metal intake duct, refer to
Section 4, paragraphs 3 and 4.
5 To remove the air intake hose it will first be
necessary to remove the left-hand headlamp
assembly, to gain access to the two retaining
screws. Remove the two retaining screws and
disconnect the duct from the body front
panel, release the clip securing the ignition HT
lead, then slacken the retaining clamp and
unfasten the rubber strap to separate the cold
air duct from the intake duct. Release the
intake hose from the resonator T-piece and
remove it from the engine compartment.
6 A resonator chamber is fitted to the intake
hose to reduce the amount of induction noise.
To remove the chamber, first remove the
battery and battery tray. Disconnect the intake
hose from the T-piece then remove the
resonator T-piece. Release any relevant
retaining clips from the resonator, then
remove the resonator from the engine
compartment (see illustrations).
Refitting
3.6a Remove T-piece . . .
7 Refitting is the reverse of the removal
procedure. Ensure that the vacuum pipes and
hoses are correctly reconnected and are not
trapped as the assembly is refitted, then
check that the assembly sits properly on the
throttle body before tightening the screws
securely.
4.3 Unfastening cold air intake duct
rubber strap - vacuum pipe (A) and clamp
screw (B)
3.6b . . . then remove resonator
4 Air cleaner air temperature
control system - inspection
and component renewal
2
Inspection
1 Refer to Section 4 in Part A of this Chapter.
Thermac switch - renewal
2 Refer to Section 4 in Part A of this Chapter,
removing the air cleaner assembly as
described in the previous Section.
Air temperature control valve -
renewal
3 Disconnect the vacuum pipe from the air
temperature control valve, then slacken the
intake hose retaining clamp. Release the
intake hose rubber retaining strap and
disconnect the hose from the metal intake
duct (see illustration).
4 Release the two clips securing the air intake
duct to the air cleaner assembly and undo the
bolt securing the duct to its mounting bracket
(see illustration). Withdraw the duct, taking
care not to lose the hot air intake connector
hose which connects the duct to the exhaust
manifold shroud.
5 The air temperature control valve can be
renewed only with the complete intake duct
assembly. If a new intake duct assembly is
being fitted, undo the three screws securing
4.4 Unfastening intake duct-to-support
bracket retaining bolt
1689 Rover 214 & 414 Updated Version 09/97
the hot air intake adaptor plate to the bottom
of the duct and transfer the adaptor plate to
the new duct.
6 Refitting is the reverse of the removal
procedure.
5 Fuel system - inspection
Refer to Chapter 1.
6 Fuel system -
depressurisation 2
Warning: The following
procedure will merely relieve the
pressure in the fuel system.
Remember that fuel will still be
present in the system components and
take precautions accordingly before
disconnecting any of them.
1 The fuel system referred to in this Section is
defined as the tank-mounted fuel pump, the
fuel filter, the fuel injector and the pressure
regulator in the injector housing, and the
metal pipes and flexible hoses of the fuel lines
between these components. All these contain
fuel which will be under pressure while the
engine is running and/or while the ignition is
switched on. The pressure will remain for
some time after the ignition has been
switched off and must be relieved before any
of these components are disturbed for
servicing work.
Models with a catalytic
converter
2 On models equipped with a catalytic
converter, the system is depressurised via the
small bolt fitted to the fuel filter inlet (feed)
union nut.
3 Position wads of rag around the union to
catch the spilled fuel and slowly slacken the
bolt.
4 Once all pressure has been released,
remove the bolt. Inspect the sealing washer
for signs of wear or damage and renew if
necessary.
5 Refit the bolt and sealing washer to the
union nut and tighten it securely.
Models without a catalytic
converter
6 On models not fitted with a catalytic
converter, the system is depressurised via the
bolt in the metal fuel filter outlet pipe.
7 Position wads of rag around the pipe to
catch the spilled fuel as the bolt is removed.
Carefully slacken the bolt whilst holding the
fuel pipe boss with an open-ended spanner to