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IGNIIION
Ignition
The,ig
nition ,timing,is
,set
dynamically
to give opt
imum
engine performance with
timing
efficient
engine
emission cont
rol.
Electronic test equipment must be used to
check the ignition timing setting and the automatic advance (see 'GENERAL
DA~A').
Checking and
adjustment
to the ignition timing setting should be
carried out by your authorized Aust
in
MG Dealer control service
station.
Basic tuning data will be found on the Vehicle Emission Control
Information
Label located in the engine compartment.
Distributor
Release the retaining clips and remove the cover (1). Remove the
rotor arm
(2)
Fig. 1
and the anti-flash shield (3).
LUbricatio~.
Add a few drops of oil to the felt pad (4) in the top of the timing
rotor carrier.
Remove the anti-flash shield and lubricate the pick-up plate centre
bearing
with
a drop of oil in each of the two holes (5) in the base plate.
CAUTION: Do not disturb the screw (6) securing the base plate.
Cleaning. With a clean nap-free cloth wipe the inside of the distributor cover
the rotor Cl:rm and .the
ant~-flash s~iel~.
'
R efit the anti-flash shield, ensuring that
the cut-outs are aligned WIth the distributor cover retaining clips. Refit the rotor
arm and the
cover.
Spark plugs
Disconnect the H
.T.
lead from each spark plug, and partly unscrew each plug.
Fig.
2
Clean the area of the cylinder head surrounding the seating of each plug, then
unscrew each 'plug and discard it.
Check the gaps of new plugs, and reset if necessary to the recommended gap
(see 'GENERAL DATA'). To reset, use a Champion spark plug gauge and setting
tool; move the side electrode, never the centre one.
NOTE: Ensure that only the recommended type and grade of spark
plug are
used (see 'GENERAL DATA').
Screw the plug down by hand as far as possible, then use a spanner
for
tightenin
only.
Always use a tubular box spanner to avoid possible damage to
the insulat
r,
and do not under any circumstances use a movable wrench. Never
overtighten
a
plug, but ensure that a good joint is made between the plug body,
washer, and
cylinder head. Wipe clean the outside of the plugs before reconnecting
the H.T.
leads.
Fig.
1
I~
Fig. 2
4
Fig.
1
6ND1l6
6
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