IGNIIION
Ignition
The,ignition,timing,is,set dynamically to give optimum engine performance with
timing
efficient engine emission control. 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 Austin 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~.
'Refit the anti-flash shield, ensuring
that
the cut-outs are aligned WIththe 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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