Air Cleaner Element Renewal; Cooling System Filling; Antifreeze Mixture; Open Bleed Screw In Coolant Pipe Above The Exhaust Manifold - Opel Zafira B MPV 2006 Owners Workshop Manual

1s•14
Every 2 years - diesel models
27 .18 Open the bleed screw (arrowed) in the
coolant pipe above the exhaust manifold
the thermostat opening. Direct a clean flow
of water through the engine, and continue
flushing until clean water emerges from the
radiator bottom hose.
14 On completion of flushing, refit the
thermostat with reference to Chapter 3, and
reconnect the hoses.
Cooling system filling
15 Before attempting to fill the cooling
system, make sure that all hoses and clips are
in good condition, and that the clips are tight.
Note that an antifreeze mixture must be used
all year round, to prevent corrosion of the
engine components.
16 Remove the expansion tank filler cap.
29.2 Slacken the clip and disconnect the
air intake duct from the airflow meter
29.4a Undo the retaining screws ...
17 Fill the system by slowly pouring the
coolant into the expansion tank until it is up to
the filler neck.
18 Open the bleed screw in the coolant pipe
above the exhaust manifold (see illustration).
Close the coolant pipe bleed screw as soon
as coolant emerges.
19 Top-up the expansion tank until the
coolant level is up to the KALT/COLD mark on
the side of the tank.
20 Refit and tighten the expansion tank filler
cap.
21 Start the engine and run it at 2000 to
2500 rpm until the cooling fan switches on.
Continue running the engine at between 2000
and 2500 rpm for a further 2 minutes.
22 Stop the engine, and allow it to cool, then
recheck the coolant level with reference to
Weekly checks. Top-up the level if necessary
· and refit the expansion tank filler cap. Refit the
engine undertray (where applicable).
Antifreeze mixture
23 Always use an ethylene-glycol based
antifreeze which is suitable for use in
mixed-metal cooling systems (see Lubricants
and fluids).
The quantity of antifreeze and levels
of protection are given in the Specifications.
24
Before adding antifreeze, the cooling
system should be completely drained,
preferably flushed, and all hoses checked for
condition and security.
29.3 Disconnect the wiring connector from
the airflow meter
29.4b . . . lift off the air cleaner cover ...
25
After filling with antifreeze, a label should
be attached to the expansion tank, stating the
type and concentration of antifreeze used, and
the date installed. Any subsequent topping-up
should be made with the same type and
concentration of antifreeze.
Caution: Do not use engine antifreeze in
the windscreen/tailgate washer system,
as it will cause damage to the vehicle
paintwork. A screenwash additive should
be added to the washer system in the
quantities stated on the bottle.
1 The exhaust emission check is carried
out initially after 3 years, then every 2 years,
however, on vehicles which are subject to
intensive use (eg, taxis/hire cars/ambulances)
it must be carried out annually. The check
involves checking the engine management
system operation by plugging an electronic
tester into the system diagnostic socket
to check the electronic control unit (ECU)
memory for faults (see Chapter 48).
2 In reality, if the vehicle is running correctly
and the engine management warning light in
the instrument panel is functioning normally,
then this check need not be carried out.
1 The air cleaner is located in the front right-
hand corner of the engine compartment.
2 Slacken the retaining clip and disconnect
the air duct from the air cleaner cover (see
illustration).
3 Disconnect the wiring connector from the
side of the airflow meter (see illustration).
4 Undo the screws and lift off the air cleaner
cover, then lift out the filter element (see
illustrations).
5 Wipe out the casing and the cover.
29.4c ... then lift out the filter element