Infiniti M35/M45 Y50. Manual - part 957

ENGINE MAINTENANCE (VK45DE ENGINE)

MA-25

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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 

CO-40, "DRAINING ENGINE COOLANT"

 .

8.

Repeat steps 1 through 7 until clear water begins to drain from radiator.

Checking Fuel Lines

NLS0007T

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 Filter

NLS0007U

VISCOUS PAPER TYPE

The viscous paper type filter does not need cleaning between replacement intervals. Refer to 

MA-7,

"PERIODIC MAINTENANCE"

 .

Changing Engine Oil

NLS0007V

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 engine oil leakage from engine components. Refer
to 

LU-27, "ENGINE OIL LEAKAGE"

 .

2.

Stop engine and wait for 15 minutes.

3.

Loosen oil filler cap.

4.

Remove mounting bolts, and then pull down the rear of front engine undercover and secure it using clip.

5.

Remove drain plug and then drain engine oil.

6.

Install drain plug with new washer. Refer to 

EM-187, "OIL PAN AND OIL STRAINER"

 .

CAUTION:

Be sure to clean drain plug and install with new washer.

Air relief plug:

: 1.2 N·m (0.12 kg-m, 11 in-lb)

SMA803A

PBIC0993E

Oil pan drain plug:

: 34.3 N·m (3.5 kg-m, 25 ft-lb)

MA-26

ENGINE MAINTENANCE (VK45DE ENGINE)

7.

Refill with new engine oil.
Engine oil specification and viscosity:
Refer to 

MA-12, "RECOMMENDED FLUIDS AND LUBRICANTS"

 .

Engine oil capacity (Approximate):

                                                                                                                                                                  Unit: 

 (US qt, Imp qt)

CAUTION:

●

The refill capacity depends on the engine oil temperature and drain time. Use these specifica-
tions for reference only.

●

Always use oil level gauge to determine the proper amount of engine oil in the engine.

8.

Warm up engine and check area around drain plug and oil filter for oil leakage.

9.

Stop engine and wait for 15 minutes.

10. Check the engine oil level.

Changing Oil Filter

NLS0007W

REMOVAL

WARNING:

Be careful not to get burned when the engine and engine oil may be hot.

1.

Remove front engine undercover with power tool.

2.

Using the oil filter wrench (SST), remove the oil filter.

CAUTION:

●

Oil filter is provided with relief valve. Use genuine NIS-
SAN engine oil filter or equivalent.

●

When removing, prepare a shop cloth to absorb any
engine oil leakage or spillage.

●

Do not allow engine oil to adhere to drive belts.

●

Completely wipe off any engine oil that adhere to engine
and vehicle.

INSTALLATION

1.

Remove foreign materials adhering to oil filter installation surface.

2.

Apply new engine oil to the oil seal circumference of the new oil
filter.

Drain and refill

With oil filter change

5.5 (5-3/4, 4-7/8)

without oil filter change

4.9 (5-1/8, 4-1/4)

Dry engine (engine overhaul)

6.7 (7-1/8, 5-7/8)

PBIC0801E

PBIC1525E

SMA010

ENGINE MAINTENANCE (VK45DE ENGINE)

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3.

Screw oil filter manually until it touches the installation surface,
then tighten it by 2/3 turn. Or tighten to specification.

INSPECTION AFTER INSTALLATION

1.

Check the engine oil level. Refer to 

MA-25, "Changing Engine Oil"

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2.

Start engine, and check there is no leaks of engine oil.

3.

Stop engine and wait for 15 minutes.

4.

Check the engine oil level and add engine oil. Refer to 

MA-25, "Changing Engine Oil"

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Changing Spark Plugs (Platinum-Tipped Type)

NLS0007X

REMOVAL

1.

Remove engine cover with power tool. Refer to 

EM-173, "ENGINE ROOM COVER"

 .

2.

Remove ignition coil. Refer to 

EM-190, "IGNITION COIL"

 .

3.

Remove spark plug with spark plug wrench (commercial service
tool).

CAUTION:

Do not drop or shock it.

INSPECTION AFTER REMOVAL

Use standard type spark plug for normal condition.

Hot type spark plug is suitable when fouling occurs with standard type spark plug under conditions such as:

●

Frequent engine starts

●

Low ambient temperatures

Cold type spark plug is suitable when spark plug knock occurs with standard type spark plug under conditions 
such as:

●

Extended highway driving

●

Frequent high engine revolution

CAUTION:

●

Do not drop or shock spark plug.

Oil filter:

:17.7 N·m (1.8 kg-m, 13 ft-lb)

SMA229B

SEM294A

Make

NGK

Standard type

PLFR5A-11

Hot type

PLFR4A-11

Cold type

PLFR6A-11

Gap (Nominal)

: 1.1 mm (0.043 in)

MA-28

ENGINE MAINTENANCE (VK45DE ENGINE)

●

Do not use wire brush for cleaning.

●

If plug tip is covered with carbon, spark plug cleaner may
be used.

●

Checking and adjusting plug gap is not required between
change intervals.

INSTALLATION

Install in the reverse order of removal.

Checking EVAP Vapor Lines

NLS0007Y

1.

Visually inspect EVAP vapor lines for improper attachment and for cracks, damage, loose connections,
chafing and deterioration.

2.

Inspect fuel tank filler cap vacuum relief valve for clogging, sticking, etc.

Refer to 

EC-741, "EVAPORATIVE EMISSION SYSTEM"

 .

Cleaner air pressure:

Less than 588 kPa (6 kg/cm

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 , 85 psi)

Cleaning time:

Less than 20 seconds

SMA773C

SMA806CA

Spark plug:

: 24.6 N·m (2.5 kg-m, 18 ft-lb)