Infiniti Q45. Manual - part 553

IGNITION COIL

EM-29

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IGNITION COIL

PFP:22448

Removal and Installation

NBS001ON

REMOVAL

1.

Remove engine cover (with power tool), air duct (inlet), air cleaner cover and battery cover. Refer to 

EM-

13, "Removal and Installation"

 .

2.

Remove air duct and air cleaner case assembly. Refer to 

EM-17, "AIR CLEANER AND AIR DUCT"

 .

3.

Move heater hose and its peripheral parts aside. (No. 7 cylinder)

4.

Disconnect harness connector from ignition coil.

5.

Remove ignition coil.

CAUTION:

Do not shock it.

INSTALLATION

Install in the reverse order of removal.

1.

Ignition coil

2.

Spark plug

PBIC1589E

EM-30

SPARK PLUG (PLATINUM-TIPPED TYPE)

SPARK PLUG (PLATINUM-TIPPED TYPE)

PFP:22401

Removal and Installation

NBS001OO

REMOVAL

1.

Remove ignition coil. Refer to 

EM-29, "IGNITION COIL"

 .

2.

Remove spark plug with the spark plug wrench (commercial ser-
vice tool).

CAUTION:

Do not drop or shock it.

INSPECTION AFTER REMOVAL

●

Use standard type spark plug for normal condition.

The hot type spark plug is suitable when fouling occurs with the standard type spark plug under conditions
such as:

●

Frequent engine starts

●

Low ambient temperatures

The cold type spark plug is suitable when spark knock occurs with the standard type spark plug under condi-
tions such as:

●

Extended highway driving

●

Frequent high engine revolution

Spark plug (Platinum-tipped type):

CAUTION:

●

Do not drop or shock spark plug.

●

Do not use a wire brush for cleaning.

●

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

SEM294A

Make

NGK

Standard type

PLFR5A-11

Hot type

PLFR4A-11

Cold type

PLFR6A-11

Plug gap (Nominal)

: 1.1 mm (0.043 in)

Cleaner air pressure:

Less than 588 kPa (6 kg/cm

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  , 85 psi)

Cleaning time:

Less than 20 seconds

SMA773C

SPARK PLUG (PLATINUM-TIPPED TYPE)

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

INSTALLATION

Install in the reverse order of removal.

SMA806CA

Spark plug:

 : 24.6 N·m (2.5 kg-m, 18 ft-lb)

EM-32

FUEL INJECTOR AND FUEL TUBE

FUEL INJECTOR AND FUEL TUBE

PFP:16600

Removal and Installation

NBS001OP

CAUTION:

Do not remove or disassemble parts unless instructed as shown in the figure.

REMOVAL

WARNING:

●

Put a “CAUTION: INFLAMMABLE” sign in the workshop.

●

Be sure to work in a well ventilated area and furnish workshop with a CO

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  fire extinguisher. 

●

Do not smoke while servicing fuel system. Keep open flames and sparks away from the work area.

1.

Remove engine cover with power tool. Refer to 

EM-13, "ENGINE ROOM COVER"

 .

2.

Release fuel pressure. Refer to 

EC-80, "FUEL PRESSURE RELEASE"

 .

1.

Fuel injector sub harness (right)

2.

Centralized under-floor piping

3.

Fuel feed hose

4.

Quick connector cap

5.

O-ring

6.

Fuel damper (right)

7.

Fuel tube (right)

8.

Spacer

9.

Fuel feed damper

10.

Fuel damper and fuel hose assembly 11.

Clip

12.

O-ring (Green) 

13.

Fuel injector

14.

O-ring (Black)

15.

Fuel tube (left)

16.

Fuel injector sub harness (left)

PBIC4065E