Nissan Qashqai J11. Manual — part 171
CO-88
< SYMPTOM DIAGNOSIS >
[R9M]
OVERHEATING CAUSE ANALYSIS
Except cool-
ing system
parts mal-
function
—
Overload on engine
Abusive driving
High engine rpm under no
load
Driving in low gear for ex-
tended time
Driving at extremely high
speed
Power train system mal-
function
—
Installed improper size
wheels and tires
Dragging brakes
Improper ignition timing
Blocked or restricted air
flow
Blocked bumper
—
—
Blocked radiator grille
Installed car brassiere
Mud contamination or paper
clogging
Blocked radiator
—
Blocked condenser
Blocked air flow
Installed large fog lamp
Symptom
Check items
ENGINE COOLANT
CO-89
< PERIODIC MAINTENANCE >
[R9M]
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PERIODIC MAINTENANCE
ENGINE COOLANT
Inspection
INFOID:0000000010416523
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.
WARNING:
Never remove reservoir tank cap when engine is hot. Serious
burns could occur from high-pressure engine coolant escaping
from reservoir tank.
LEAKAGE
• To check for leakage, fit the adapter (B) to the reservoir tank, and
then connect it to the reservoir tank cap tester [SST: — (M.S.554-
07)] (A) as shown.
WARNING:
Never remove reservoir tank cap when engine is hot. Serious
burns could occur from high-pressure engine coolant escap-
ing from reservoir tank.
CAUTION:
Higher test pressure than specified may cause radiator dam-
age.
• If anything is found, repair or replace damaged parts.
Draining
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WARNING:
• Never remove radiator cap when engine is hot. Serious burns may occur from high-pressure engine
coolant escaping from radiator.
• Wrap a thick cloth around the radiator cap. Slowly turn it a quarter of a turn to release built-up pres-
sure. Then turn it all the way.
1.
Remove engine under cover.
2.
Remove reservoir tank cap.
3.
Open radiator drain plug (1) of radiator.
CAUTION:
Perform this step when engine is cold.
4.
Remove reservoir tank if necessary, and drain engine coolant
and clean reservoir tank before installing. Refer to
5.
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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CAUTION:
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Testing pressure: Refer to
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: Vehicle front
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CO-90
< PERIODIC MAINTENANCE >
[R9M]
ENGINE COOLANT
• Never put additive such as waterleak preventive, since it may cause cooling waterway clogging.
• When refilling use Genuine NISSAN Long Life Antifreeze/Coolant (blue) or equivalent in its quality
mixed with water (distilled or demineralized). Refer to
MA-59, "Fluids and Lubricants"
1.
Install reservoir tank if removed and radiator drain plug (1).
CAUTION:
Be sure to clean drain plug and install with new O-ring.
2.
Check that each hose clamp has been firmly tightened.
3.
Open radiator air relief plug (1).
4.
Disconnect heater hose (1) at position (
) in the figure.
• Enhance heater hose as high as possible.
5.
Open air relief plug (1).
6.
Fill reservoir tank with engine coolant.
CAUTION:
Never adhere the engine coolant to electronic equipments (alternator etc.).
• Pour coolant slowly of less than 3 (2-5/8 Imp qt) per minute to allow air in system to escape.
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ENGINE COOLANT
CO-91
< PERIODIC MAINTENANCE >
[R9M]
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•
7.
When engine coolant spill from radiator air relief plug with continuous flow, close air relief plug and con-
tinue filling reservoir tank.
8.
When engine coolant spill from air relief plug with continuous flow, close air relief plug and continue filling
reservoir tank.
9.
When engine coolant spill from heater hose with continuous
flow, connect heater hose and continue filling reservoir tank until
reach “MAX” level
10.
11. Install radiator cap.
12. Warm up engine at 3000 rpm until thermostat is opened.
• 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.
CAUTION:
Never adhere the engine coolant to electronic equipments (alternator etc.).
14. Refill reservoir tank to “MAX” level line with engine coolant.
15. Repeat steps 11 through 15 two or more times with radiator cap installed until engine coolant level no
longer drops.
16. Check cooling system for leakage with engine running.
17. Warm up the engine, and check for flowing noise while repeat at least three time slow acceleration from
idle up to 3,000 rpm.
18. If flowing noise is heard, bleed air from cooling system by repeating step 11 through 17 until flowing noise
is no longer heard.
Flushing
INFOID:0000000010464247
1.
Install reservoir tank if removed and radiator drain plug (1).
CAUTION:
Be sure to clean drain plug and install with new O-ring.
Engine coolant capacity
(With reservoir tank at “MAX” level)
Refer to
CO-106, "Periodical Maintenance Specifica-
.
A
: MAX
B
: MIN
Reservoir tank engine coolant capacity
(At “MAX” level)
CO-106, "Periodical Maintenance Specifica-
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