Infiniti G37 Coupe. Manual — part 890
ENGINE MAINTENANCE
MA-13
< ON-VEHICLE MAINTENANCE >
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When draining all of engine coolant in the system, open water drain plugs on cylinder block. Refer
to
.
2.
Remove reservoir tank as necessary, and drain engine coolant and clean reservoir tank before installing.
3.
Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling system. Refer to
MA-15, "ENGINE COOLANT : Flushing"
ENGINE COOLANT : Refilling
INFOID:0000000001766054
1.
Remove air cleaner case (LH). Refer to
.
2.
Install reservoir tank if removed, and radiator drain plug.
CAUTION:
Be sure to clean drain plug and install with new O-ring.
If water drain plugs on cylinder block are removed, close and tighten them. Refer to
.
3.
Check that each hose clamp has been firmly tightened.
4.
Remove air relief plug (2) on radiator left side.
5.
Remove air relief plug (1) on heater hose.
1
: Engine under cover
A
: Radiator drain plug hole
: Vehicle front
JPBIA0259ZZ
Tightening torque
: Refer to
1
: Reservoir tank
3
: Engine cover
: Vehicle front
JPBIA0260ZZ
2
: Heater hose
: Vehicle front
JPBIA0104ZZ
MA-14
< ON-VEHICLE MAINTENANCE >
ENGINE MAINTENANCE
6.
Fill radiator, and reservoir tank if removed, to specified level.
• Pour engine coolant through engine coolant filler neck
slowly of less than 2 (2-1/8 US qt, 1-3/4 lmp qt) a minute
to allow air in system to escape.
• Use Genuine NISSAN Long Life Antifreeze/Coolant or
equivalent mixed with water (distilled or demineralized).
Refer to
MA-10, "Fluids and Lubricants"
7.
When engine coolant overflows air relief hole on radiator, install
air relief plug with new O-ring.
8.
Repeat step 6.
9.
When engine coolant overflows air relief hole on heater hose, install air relief plug with new O-ring. Then
refill radiator with engine coolant.
10. Install air cleaner case (LH). Refer to
.
11. Install radiator cap.
12. Warm up engine until opening thermostat. Standard for warming-up time is approximately 10 minutes at
3,000 rpm.
• Check thermostat opening condition by touching radiator hose (lower) to see a flow of warm water.
CAUTION:
Watch water temperature gauge so as not to overheat engine.
13. Stop the engine and cool down to less than approximately 50
°
C (122
°
F).
• Cool down using fan to reduce the time.
• If necessary, refill radiator up to filler neck with engine coolant.
14. Refill reservoir tank to “MAX” level line with engine coolant.
15. Repeat steps 11 through 14 two or more times with radiator cap installed until engine coolant level no
longer drops.
16. Check cooling system for leaks with engine running.
17. Warm up the engine, and check for sound of engine coolant flow while running engine from idle up to
3,000 rpm with heater temperature controller set at several position between “COOL” and “WARM”.
• Sound may be noticeable at heater unit.
18. Repeat step 17 three times.
19. If sound is heard, bleed air from cooling system by repeating step 6, and steps from 11 to 18 until engine
coolant level no longer drops.
20. Check that the reservoir tank cap is tightened.
Engine coolant capacity
: Refer to
"Periodical Maintenanc
e Specification"
(With reservoir tank at
“MAX” level)
JPBIA0412ZZ
Reservoir tank engine coolant capacity
:Refer to
"Periodical Maintenance Specification"
(At “MAX” level)
A
: MAX
B
: MIN
Tightening torque
: Refer to
.
JPBIA0102ZZ
: 1.2 N·m (0.12 kg-m, 11 in-lb)
ENGINE MAINTENANCE
MA-15
< ON-VEHICLE MAINTENANCE >
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ENGINE COOLANT : Flushing
INFOID:0000000001766055
1.
Install reservoir tank if removed, and radiator drain plug.
CAUTION:
Be sure to clean drain plug and install with new O-ring.
If water drain plugs on cylinder block are removed, close and tighten them. Refer to
.
2.
Remove air relief plug (1) on heater hose.
3.
Remove air relief plug (2) on radiator.
4.
Fill radiator with water until water spills from the air relief holes, then close air relief plugs. Fill radiator and
reservoir tank with water and reinstall radiator cap.
5.
Run the engine and warm it up to normal operating temperature.
6.
Rev the engine two or three times under no-load.
7.
Stop the engine and wait until it cools down.
8.
Drain water from the system. Refer to
MA-12, "ENGINE COOLANT : Draining"
.
9.
Repeat steps 1 through 8 until clear water begins to drain from radiator.
10. Check that the reservoir tank cap is tightened.
FUEL LINES
Tightening torque
2
: Heater hose
: Vehicle front
JPBIA0104ZZ
1
: Reservoir tank
3
: Engine cover
: Vehicle front
JPBIA0260ZZ
Tightening torque
: Refer to
.
MA-16
< ON-VEHICLE MAINTENANCE >
ENGINE MAINTENANCE
FUEL LINES : Inspection
INFOID:0000000001766056
Inspect fuel lines, fuel filler cap and fuel tank for improper attach-
ment, leaks, cracks, damage, loose connections, chafing or deterio-
ration.
If necessary, repair or replace damaged parts.
AIR CLEANER FILTER
AIR CLEANER FILTER : Removal and Installation
INFOID:0000000001766059
REMOVAL
1.
Unhook clips (1).
2.
Remove air cleaner filter (1) from air cleaner case (2).
INSTALLATION
Note the following, and install in the reverse order of removal.
• Install the air cleaner filter by aligning the seal with the notch of air cleaner case.
ENGINE OIL
ENGINE OIL : Draining
INFOID:0000000001766061
WARNING:
• Be careful not to get burn yourself, as engine oil may be hot.
• Prolonged and repeated contact with used engine oil may cause skin cancer. Try to avoid direct skin
contact with used engine oil. If skin contact is made, wash thoroughly with soap or hand cleaner as
soon as possible.
1.
Warm up the engine, and check for engine oil leakage from engine components. Refer to
2.
Stop the engine and wait for 10 minutes.
3.
Loosen oil filler cap.
A
: Engine
B
: Fuel line
C
: Fuel tank
JPBIA0129ZZ
2
: Air cleaner case
3
: Holder
KBIA3584J
3
: Holder
4
: Clip
JPBIA0005ZZ
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