Page 15 of 30

ENGINE MAINTENANCE
MA-15
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Revision: 2006 November2007 350Z
When engine coolant overflows air relief hole on heater hose,
install air relief plug with new O-ring.
5. Install radiator cap.
6. Warm up until opening thermostat. Standard for warming-up time is approximately 10 minutes at 3,000
rpm.
Make sure thermostat condition by touching radiator hose (lower) to see flow of warm water.
CAUTION:
Watch water temperature gauge so as not to overheat engine.
7. Stop 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.
8. Refill reservoir tank to “MAX” level line with engine coolant.
9. Repeat steps 4 through 7 two or more times with radiator cap installed until engine coolant level no longer
drops.
10. Check cooling system for leaks with engine running.
11. Warm up 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.
12. Repeat step 11 three times.
13. If sound is heard, bleed air from cooling system by repeating step 4 through 7 until engine coolant level no
longer drops.
Clean excess engine coolant from engine.
FLUSHING COOLING SYSTEM
1. Install reservoir tank, 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 EM-111,
"ASSEMBLY" .
2. Remove air relief plug (1) on heater hose (2).
3. Fill radiator with water until water spills from the air relief hole, then close air relief plug. Fill radiator and
reservoir tank with water and reinstall radiator cap.Reservoir tank capacity (at “MAX” level)
: 0.8 (7/8 US qt, 3/4 lmp qt)
Air relief plug:
: 1.2 N·m (0.12 kg-m, 11 in-lb)
SMA412B
Radiator drain plug:
: 1.2 N·m (0.12 kg-m, 11 in-lb)
: Vehicle front
PBIC5029E
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MA-16
ENGINE MAINTENANCE
Revision: 2006 November2007 350Z
4. Run engine and warm it up to normal operating temperature.
5. Rev engine two or three times under no-load.
6. Stop engine and wait until it cools down.
7. Drain water from the system. Refer to MA-13, "
DRAINING ENGINE COOLANT" .
8. Repeat steps 1 through 7 until clear water begins to drain from radiator.
Checking Fuel LinesNLS0000D
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.
Changing Air Cleaner FilterNLS0000E
VISCOUS PAPER TYPE
The viscous paper type filter does not need cleaning between
replacement intervals. Refer to MA-7, "
PERIODIC MAINTE-
NANCE" .
Changing Engine OilNLS0000F
WARNING:
Be careful not to 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 engine, put vehicle horizontally and check for oil leakage from engine components. Refer to LU-
6, "ENGINE OIL LEAKAGE" .
2. Stop engine and wait for 10 minutes.
3. Loosen oil filler cap and then remove drain plug.
4. Drain engine oil.
5. Install drain plug with new washer. Refer to EM-26, "
OIL PAN AND OIL STRAINER" .
CAUTION:
Be sure to clean drain plug and install with new washer.
6. Refill with new engine oil.
Engine oil specification and viscosity:
Refer to MA-11, "
RECOMMENDED FLUIDS AND LUBRICANTS" . Air relief plug:
: 1.2 N·m (0.12 kg-m, 11 in-lb)
SMA803A
PBIC1118E
Oil pan drain plug:
: 34.3 N·m (3.5 kg-m, 25 ft-lb)
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MA-30
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: 2006 November2007 350Z
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Standard and LimitNLS00014
BELT DEFLECTION AND TENSION
ENGINE COOLANT CAPACITY (APPROXIMATE)
Unit: (US qt, lmp qt)
ENGINE OIL CAPACITY (APPROXIMATE)
Unit: (US qt, lmp qt)
SPARK PLUG (IRIDIUM-TIPPED TYPE)
WHEEL BALANCE
Tightening TorqueNLS00015
Unit: N·m (kg-m, ft-lb),
Unit: N·m (kg-m, in-lb)* Tension of drive belts Auto adjustment by auto tensioner
Engine coolant capacity (With reservoir tank at “MAX” level) 9.0 (9-1/2, 7-7/8)
Reservoir tank engine coolant capacity (at MAX level) 0.8 (7/8, 3/4)
Drain and refill With oil filter change 4.9 (5-1/8, 4-1/4)
Without oil filter change 4.6 (4-7/8, 4)
Dry engine (Overhaul)5.5 (5-3/4, 4-7/8)
MakeDENSO
Standard typeFXE22HR-11
Gap (Nominal)1.1 mm (0.043 in)
Maximum allowable unbalanceDynamic (At rim flange) Less than 5 g (0.17 oz) (one side)
Static (At rim flange) Less than 10 g (0.35 oz)
Radiator drain plug1.2 (0.12, 11)*
Air relief plug1.2 (0.12, 11)*
Oil pan drain plug34.3 (3.5, 25)
Oil filter17.7 (1.8, 13)
Spark plug19.6 (2.0, 14)