Infiniti G35 (V35) Sedan. Manual — part 315
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< ON-VEHICLE MAINTENANCE >
ENGINE COOLANT
ON-VEHICLE MAINTENANCE
ENGINE COOLANT
Inspection
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LEVEL
• Check if the reservoir tank engine coolant level is within the “MIN”
to “MAX” when the engine is cool.
• Adjust the engine coolant level as necessary.
• Check that the reservoir tank cap is tightened.
LEAKAGE
• To check for leaks, apply pressure to the cooling system with the
radiator cap tester and radiator cap tester adapter (commercial
service tool) (A).
WARNING:
Do not remove radiator cap when engine is hot. Serious burns
could occur from high-pressure engine coolant escaping from
radiator.
CAUTION:
Higher test pressure than specified may cause radiator dam-
age.
NOTE:
In a case that engine coolant decreases, replenish radiator with engine coolant.
• If anything is found, repair or replace damaged parts.
Draining
INFOID:0000000000956339
WARNING:
• To avoid being scalded, do not change engine coolant when the engine is hot.
• Wrap a thick cloth around radiator cap and carefully remove radiator cap. First, turn radiator cap a
quarter of a turn to release built-up pressure. Then turn radiator cap all the way.
1.
Open radiator drain plug (2) at the bottom of radiator, and then remove radiator cap.
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.
A
: MAX
B
: MIN
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Testing pressure
: Refer to
.
JPBIA0411ZZ
1
: Engine under cover
A
: Radiator drain plug hole
: Vehicle front
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ENGINE COOLANT
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3.
Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling system. Refer to
.
Refilling
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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.
Make sure 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.
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"
.
Tightening torque
: Refer to
1
: Reservoir tank
3
: Engine cover
: Vehicle front
JPBIA0260ZZ
2
: Heater hose
: Vehicle front
JPBIA0104ZZ
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)
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< ON-VEHICLE MAINTENANCE >
ENGINE COOLANT
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.
• Make sure 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.
Flushing
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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
.
A
: MAX
B
: MIN
Tightening torque
: Refer to
.
JPBIA0102ZZ
: 1.2 N·m (0.12 kg-m, 11 in-lb)
Tightening torque
: Refer to
ENGINE COOLANT
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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
.
9.
Repeat steps 1 through 8 until clear water begins to drain from radiator.
10. Check that the reservoir tank cap is tightened.
2
: Heater hose
: Vehicle front
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1
: Reservoir tank
3
: Engine cover
: Vehicle front
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Tightening torque
: Refer to
.
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