Startingtheengine 29
S[aTting off
3Ef]re you operate the starter, always
mie sure that the gear shift lever is in
•nlEL£raJ.
O =ars fitted with automatic transmis-
-icr, the engine can only be started whe,n
mE selector lever is in the "P" or "N"
-jon.
bre starting the engine, switch on the
gr =on and the car's lights, depress the
=r=e E»dal and push the `Check-
emgol' button (see page 15). All "sys-
iris" monitored in this way should
E=cnd by showing a green light.
-630CS
"i. BMW is equipped with an auto-
m==:choke carburetor incorporating a
iiiE:=sensitive bypass starting system.
ae=se note the following operating in-
-_,_ions:
• be engine ls cold (outside tempera-
=r= below 0° C/32° F), pness the
aiE:=!erator fully down once and release
•E=[i before operating the starter. This
qmì :roduce a richer mixture for a brief
]Er 3d and aid reliable starting.
f the engine is already at normal
•Berating temperature or the outside
:Er-oerature is above 0° C (32° F), do
mr. ]epress the accelerator before start-
rE Èe engine.
if re engine is very hot, hold the acceler-
g[:`r down fully while operating the
-er.
To stan the englne, turn the ignition key
clockwise to the "3" position (without
pressing down the accelerator) until the
engine fires. Do not allow the engine to
turn over without firing for longer than
about 20 seconds. When the ignition key
is released, it will spring back auto-
matically to the "2" position. When a cold
engine is started in this way, it will run
initially at a relatively high speed during
the warm-up phase.
To make starting easier, especially in
freezing conditions, switch off all
current-consuming items and press
down the clutch pedal.
The carburetor will automatically reduce
the engine idling speed to normal as
soon as the coolant temperature indica-
tor is between the two color zones.
lf the starter has to be operated a second
time, the ignition key must first be return-
ed from the "2" position to the ``1" posi-
tion. This deliberate delay is included to
prevent as far as possible re-engagement
of the starter pinion while the engìne is
still turning. Try to prevent damage to the
flywheel ring or starter pinion teeth by
waiting until the engine has ceased to
rotate before operati ng the starter.
lf the engine will not star[ or fires only
irregularly after several attempts, try
again with the accelerator pressed down
fully. This will force the choke butterfly
open and weaken the fuel/air mixture
considerably. Never inject still more fuel
into the intake manifolds by pressing
down the accelerator repeatedly.
ln very severe frost, protect the battery by
limiting the first starting attempt to about
20 seconds. Before a second try is made,
wait about 20-30 seconds to permit the
battery 1:o recover. The second attempt
should not be much longer than the first.
BMW 633 CSI
The fuel injectlon engine of your BIVIW is
fitted with an automatic cold starting and
warming-upunit.
Enrichment of mixture when starting
When the engine is started cold and
before it reaches normal operating tem-
perature, it requires an enriched fuel/air
mixture. For this purpose additional fuel
ieànnj:c.t,eàLnat:n:!3vi:,tvaek3.:r:i:'gd3
the ignition current. The duration of thi
injecìion process depends on the coolant
temperature and is cut off after a certain
period to avoid flooding of the engine. lt
is therefore harmful to the engine to
repeat the starting procedure at short
intervals. lnstead, operate the starter
without a break until the engine fires
(max. approx. 20 seconds).
During the subsequent warming-up
#h€§£arsaT##seaìrdveaòveenà:npter3tÀontho:
temperature -increases the engine idlìng
speed.
To star[ the engine, turn the ignition key
past the "2" position to the "3" position.
lf the engine ìs cold, always start without
pressing down the accelerator.
lf the engine is warm, start with the
accelerator pressed down halfway.
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