Nissan Primera P12. Manual — part 161
OVERHEATING CAUSE ANALYSIS
CO-5
[YD]
C
D
E
F
G
H
I
J
K
L
M
A
CO
OVERHEATING CAUSE ANALYSIS
PFP:00012
Troubleshooting Chart
EBS00SJM
Symptom
Check items
Cooling sys-
tem parts
malfunction
Poor heat transfer
Water pump malfunction
Worn or loose drive belt
—
Thermostat stuck closed
—
Damaged fins
Dust contamination or
paper clogging
Mechanical damage
Clogged radiator cooling
tube
Excess foreign material
(rust, dirt, sand, etc.)
Reduced air flow
Cooling fan does not oper-
ate
—
—
High resistance to fan rota-
tion
Damaged fan blades
Damaged radiator shroud
—
—
—
Improper coolant mixture
ratio
—
—
—
Poor coolant quality
—
—
—
Insufficient coolant
Coolant leaks
Cooling hose
Loose clamp
Cracked hose
Water pump
Poor sealing
Radiator cap
Loose
Poor sealing
Radiator
O-ring for damage, deterio-
ration or improper fitting
Cracked radiator tank
Cracked radiator core
Reservoir tank
Cracked reservoir tank
Overflowing reservoir tank
Exhaust gas leaks into
cooling system
Cylinder head deterioration
Cylinder head gasket dete-
rioration
CO-6
[YD]
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
extended time
Driving at extremely high
speed
Powertrain 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
—
Installed large fog lamp
Symptom
Check items
COOLING SYSTEM
CO-7
[YD]
C
D
E
F
G
H
I
J
K
L
M
A
CO
COOLING SYSTEM
PFP:21020
Cooling Circuit
EBS00SJN
PBIC0935E
MBIA0056E
CO-8
[YD]
ENGINE COOLANT
ENGINE COOLANT
PFP:KQ100
Inspection
EBS00SJO
LEVEL CHECK
●
Check if the reservoir tank coolant level is within MIN to MAX
when engine is cool.
●
Adjust coolant if too much or too little.
LEAK CHECK
●
To check for leakage, apply pressure to the cooling system with
a tester.
WARNING:
Never remove the radiator cap when the engine is hot. Serious
burns could occur from high pressure coolant escaping from
the radiator.
CAUTION:
Higher pressure than specified may cause radiator damage.
Changing Engine Coolant
EBS00SJP
WARNING:
●
To avoid being scalded, never change the coolant when the engine is hot.
●
Wrap a thick cloth around cap and carefully remove the cap. First, turn the cap a quarter of a turn
to release built-up pressure. Then turn the cap all the way.
DRAINING ENGINE COOLANT
1.
Disconnect lower radiator hose, and remove radiator cap.
●
Be careful not to allow coolant to contact drive belts.
●
Cover the exhaust tube heat shield to prevent from splashing
coolant.
2.
Remove reservoir tank, drain coolant, then clean reservoir tank.
3.
Open drain plugs on cylinder block.
4.
Check drained coolant for contaminants such as rust, corrosion
or discoloration.
If contaminated, flush engine cooling system. Refer to
.
SMA412B
Testing pressure: 157 kPa (1.57 bar, 1.6 kg/cm
2
, 23 psi)
SLC134B
PBIC0749E
PBIC0758E
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