Qashqai J11. Engine mechanical (HRA2DDT, K9K, MR20DD) - part 10

SPARK PLUG

EM-145

< PERIODIC MAINTENANCE >

[MR20DD]

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3.

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

CAUTION:

Never drop or shock spark plug.

INSTALLATION

Install in the reverse order of removal.

Inspection

INFOID:0000000010715465

INSPECTION AFTER REMOVAL

Use the standard type spark plug for normal condition.

CAUTION:

• Never drop or shock spark plug.
• Never use a 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

replacement intervals.

• Measure spark plug gap. when it exceeds the limit, replace

spark plug even if it is with in the specified replacement mile-
age. Refer to 

EM-248, "Spark Plug"

.

: 14 mm (0.55 in)

JPBIA0030ZZ

Spark plug (Standard type)

: Refer to 

EM-248, "Spark Plug"

.

Cleaner air pressure

: Less than 588 kPa (5.88 bar, 6 

kg/cm

2

, 85 psi)

Cleaning time

: Less than 20 seconds

SMA773C

JPBIA0031ZZ

EM-146

< REMOVAL AND INSTALLATION >

[MR20DD]

DRIVE BELT AUTO-TENSIONER

REMOVAL AND INSTALLATION

DRIVE BELT AUTO-TENSIONER

Exploded View

INFOID:0000000010715468

Removal and Installation

INFOID:0000000010715469

Removal

1.

Remove drive belt. Refer to 

EM-139, "Removal and Installation"

.

• Keep each auto-tensioner pulley arm locked after drive belts are removed.

2.

Support the bottom surface of engine using a transmission jack, and then remove the rear torque rod and
the engine mounting insulator (RH). Refer to 

EM-172, "Exploded View"

.

CAUTION:

When using the jack, apply a piece of wood to the oil pan (lower) mounting bolt to protect the bot-
tom of engine from being scratched.

3.

Remove drive belt auto-tensioner mounting bolt 

 from service

hole 

 of right side member 

.

NOTE:
Lift the front side of engine with a jack supporting the bottom of
engine and align drive belt auto-tensioner mounting bolt position
with the service hole.

4.

Remove drive belt auto-tensioner.

Installation

Install in the reverse order of removal.

CAUTION:

When installing drive belt auto-tensioner, be careful not to interfere with water pump pulley.

Front cover

Drive belt auto-tensioner

: N·m (kg-m, ft-lb)

JPBIA4304GB

: Drive belt auto-tensioner

: Vehicle front

PBIC3138J

AIR CLEANER AND AIR DUCT

EM-147

< REMOVAL AND INSTALLATION >

[MR20DD]

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AIR CLEANER AND AIR DUCT

Exploded View

INFOID:0000000010715470

Removal and Installation

INFOID:0000000010715471

REMOVAL

NOTE:
Mass air flow sensor is removable under the car-mounted condition.

1.

Release the air resonator pawls and remove to upper direction. Refer to 

EM-147, "Exploded View"

2.

Remove air duct inlet clips.

3.

Release the air duct inlet pawls and remove to upper direction. Refer to 

EM-147, "Exploded View"

4.

Disconnect mass air flow sensor harness connector.

5.

Loosen clamps of air duct assembly.
• Add mating marks if necessary for easier installation.

6.

Remove air cleaner assembly (cover and body).

7.

Remove mass air flow sensor from air cleaner body, if necessary.

CAUTION:

Mounting rubber 

Air duct assembly

Air cleaner filter unit assembly

Air cleaner filter unit bracket

Air resonator bracket

Air Resonator

Air duct inlet

Clip

Air duct assembly bracket 1

Air duct assembly bracket 2

: Always replace after every disassembly.

: N·m (kg-m, in-lb)

E1BIA1175GB

EM-148

< REMOVAL AND INSTALLATION >

[MR20DD]

AIR CLEANER AND AIR DUCT

Handle the mass air flow sensor with following cares.
• Never shock the mass air flow sensor.
• Never disassemble the mass air flow sensor.
• Never touch the sensor of the mass air flow sensor.

8.

Disconnect PCV hose.

9.

Remove air duct assembly.

10. Remove bracket, if necessary.

INSTALLATION

Note the following, and install in the reverse order of removal.

Air cleaner body

CAUTION:

Check that mounting rubber is positioned in the mounting location and be careful not to allow it to be
dislocated when installing air cleaner body.

Air duct assembly

• To install air duct assembly 

, align the matching marks 

 on both

ends with the others.

CAUTION:

Never allow foreign materials (i.e. lint) to adhere to the mount-
ing part of air duct assembly and each mating part.

• Install hose clamps and tighten to the torque specified below.

Inspection

INFOID:0000000010715472

INSPECTION AFTER REMOVAL

Inspect air duct assembly for crack or tear.
• If anything found, replace air duct assembly.

: Air cleaner body

: Electric throttle control actuator

: Vehicle front

: 4.5 Nm (0.46 kg-m, 40 in-lb)

JPBIA6831ZZ

INTAKE MANIFOLD

EM-149

< REMOVAL AND INSTALLATION >

[MR20DD]

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INTAKE MANIFOLD

Exploded View

INFOID:0000000010715473

Removal and Installation

INFOID:0000000010715474

REMOVAL

1.

Remove air cleaner assembly and air duct assembly. Refer to 

EM-147, "Exploded View"

.

2.

Pull out oil level gauge. 

CAUTION:

Cover the oil level gauge guide openings to avoid entry of foreign materials.

Clamp

EVAP hose

Connector

EVAP hose

Clamp

EVAP canister purge volume 
control solenoid valve

Bracket

PCV hose

Gasket

Intake manifold

Gasket

Electric throttle control actuator

To brake booster

: Always replace after every disassembly.

: N·m (kg-m, ft-lb)

: N·m (kg-m, in-lb)

JPBIA6811GB

EM-150

< REMOVAL AND INSTALLATION >

[MR20DD]

INTAKE MANIFOLD

3.

Disconnect water hoses 

 from electric throttle control actuator

as follows:
• Drain engine coolant from radiator or attach plug to prevent

engine coolant leakage when engine coolant is not drained.
Refer to 

CO-38, "Draining"

.

CAUTION:

Perform this step when the engine is cold.

4.

Remove electric throttle control actuator.

CAUTION:

• Handle carefully to avoid any shock to electric throttle control actuator.
• Never disassemble electric throttle control actuator.

5.

Disconnect vacuum hose from intake manifold.

6.

Disconnect PCV hose from intake manifold and rocker cover.

7.

Remove intake manifold with the following procedure:

CAUTION:

• Handle carefully to avoid any shock to intake manifold

runner control valve motor 

.

• Never remove intake manifold runner control valve motor.

(Not designed for disassembly)

• Cover engine openings to avoid entry of foreign materi-

als.

a.

Loosen and remove intake manifold mounting bolts 

 and 

.

b.

Remove harness clip from intake manifold side.

c.

Disconnect EVAP hose from intake manifold.

d.

Disconnect harness connector from EVAP canister purge vol-
ume control valve.

JPBIA6509ZZ

: Electric throttle control actuator side

JPBIA6787ZZ

: Intake manifold

: Engine front

JPBIA6812ZZ

INTAKE MANIFOLD

EM-151

< REMOVAL AND INSTALLATION >

[MR20DD]

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e.

Loosen mounting bolts in the order from 5 to 1 shown in the fig-
ure.

CAUTION:

Cover engine openings to avoid entry of foreign materials.

f.

Lift the surge tank side 

 of intake manifold to move it in the

direction of engine front.
NOTE:
Keep off the brake reservoir tank and A/C low pressure pipe.

g.

Lower the surge tank side to pull out intake manifold runner con-
trol valve 

 from between harness and cylinder head.

8.

Remove brackets from intake manifold, if necessary. (For air duct assembly and/or engine cover)

9.

Remove EVAP canister purge volume control solenoid valve from intake manifold, if necessary.

INSTALLATION

Note the following, and install in the reverse order of removal.

Intake Manifold

1.

Check if gasket is not dropped from the installation groove of intake manifold.

2.

Install intake manifold with the following procedure:

a.

Temporary tighten in the order 4 to 5 as shown in the figure.

b.

Tighten in the order from 1 to 6 as shown in the figure.

JPBIA6813ZZ

JPBIA6833ZZ

JPBIA6834ZZ

JPBIA6813ZZ

EM-152

< REMOVAL AND INSTALLATION >

[MR20DD]

INTAKE MANIFOLD

c.

Tighten intake manifold mounting bolt 

. Then tighten intake

manifold mounting bolt 

.

Electric Throttle Control Actuator

• Tighten bolts of electric throttle control actuator equally and diagonally in several steps.
• Perform “Throttle Valve Closed Position Learning” after repair when removing harness connector of the elec-

tric throttle control actuator. Refer to 

ECM-128, "Description"

.

• Perform “Throttle Valve Closed Position Learning” and “Idle Air Volume Learning” after repair when replacing

electric throttle control actuator. Refer to 

ECM-128, "Description"

 and 

ECM-129, "Description"

.

: Intake manifold

: Engine front

JPBIA6812ZZ

EXHAUST MANIFOLD

EM-153

< REMOVAL AND INSTALLATION >

[MR20DD]

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EXHAUST MANIFOLD

Exploded View

INFOID:0000000010715475

Removal and Installation

INFOID:0000000010715476

REMOVAL

1.

Remove intake manifold. Refer to 

EM-149, "Exploded View"

.

2.

Remove the air fuel ratio sensor 1.
• Using heated oxygen sensor wrench [SST: KV10117100], remove air fuel ratio sensor 1.

CAUTION:

Handle air fuel ratio sensor 1 carefully and avoid impacts.

3.

Remove exhaust manifold cover.

4.

Remove exhaust front tube. Refer to 

EX-11, "Exploded View"

.

Exhaust manifold cover

Air fuel ratio sensor 1

Exhaust manifold

Exhaust manifold stay

Gasket

: Always replace after every disassembly.

: N·m (kg-m, ft-lb)

: N·m (kg-m, in-lb)

JPBIA6814GB

EM-154

< REMOVAL AND INSTALLATION >

[MR20DD]

EXHAUST MANIFOLD

5.

Remove exhaust manifold stay 

.

6.

Remove exhaust manifold. 
• Loosen nuts in the order from 5 to 1 as shown in the figure.

NOTE:
Disregard No. 6 to 8 when loosening.

7.

Remove gasket.

CAUTION:

Cover engine openings to avoid entry of foreign materials.

8.

Remove stud bolts from cylinder head.

INSTALLATION

CAUTION:

Never reuse stud bolts, mounting nuts, and gasket. Always replace them with new ones.

1.

Install stud bolts to cylinder head.

2.

Install gasket to cylinder head as shown in the figure.

3.

Install exhaust manifold with the following procedure: 

: Exhaust manifold

: Upper mark

JPBIA6835ZZ

: Engine front

JPBIA6799ZZ

Torx

: Size E8

Torx

: Size E8

: Identification

: Engine front

JPBIA5141ZZ

EXHAUST MANIFOLD

EM-155

< REMOVAL AND INSTALLATION >

[MR20DD]

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a.

Tighten nuts in the order from 1 to 8 as shown in the figure.

NOTE:
No. 6 to 8 mean double of nuts No. 1 to 3.

b.

Retighten nuts in the order from 1 to 8 as shown in the figure.

4.

Install exhaust manifold stay 

 in the direction as shown in the

figure.

5.

Install remaining parts in the reverse order of removal.
• Air fuel ratio sensor 1

CAUTION:

Prevent rust preventives from adhering to the sensor body.

NOTE:
If a stud bolt on the exhaust front tube side comes off, install it with a torque socket (E7).

Inspection

INFOID:0000000010715477

INSPECTION AFTER REMOVAL

Surface Distortion

• Using feeler gauge (A) and straightedge (B), check the surface dis-

tortion of exhaust manifold mating surface in each exhaust port
and entire part.

• If it exceeds the limit, replace exhaust manifold.

INSPECTION AFTER INSTALLATION

Check the joint of parts with the engine in running state. Check that there is no leakage of exhaust gas and
abnormal sound.

: Engine front

JPBIA6799ZZ

: Exhaust manifold

: Upper mark

JPBIA6835ZZ

Limit

: Refer to 

EM-249, "Exhaust Manifold"

.

JPBIA6800ZZ

EM-156

< REMOVAL AND INSTALLATION >

[MR20DD]

OIL PAN (LOWER)

OIL PAN (LOWER)

Exploded View

INFOID:0000000010715478

Removal and Installation

INFOID:0000000010715479

REMOVAL

1.

Remove engine under cover. 

2.

Drain engine oil. Refer to 

LU-23, "Draining"

.

3.

Remove oil pan (lower) with the following procedure:

Rear oil seal

O-ring

Oil pan (upper)

Drain plug

Drain plug washer

Oil pan (lower)

O-ring

Oil level gauge guide

Oil level gauge

To oil cooler

Oil pan (lower) side

: Oil pan side

: Always replace after every disassembly.

: N·m (kg-m, ft-lb)

: Should be lubricated with oil.

: Sealing point

JPBIA6893GB

OIL PAN (LOWER)

EM-157

< REMOVAL AND INSTALLATION >

[MR20DD]

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a.

Loosen mounting bolts in reverse order as shown in the figure.

b.

Insert seal cutter [SST: KV10111100] (A) between oil pan (upper)
and oil pan (lower).

CAUTION:

• Be careful not to damage the mating surface.
• Since factory default liquid gasket has better adhesion

than conventional one, never pick the area forcibly with a
screw driver.

INSTALLATION

CAUTION:

Do not reuse O-rings or washers.
Note the following, and install in the reverse order of removal.

1.

Install oil pan (lower) with the following procedure:

a.

Use a scraper 

 to remove old liquid gasket from mating sur-

faces.
• Also remove old liquid gasket from mating surface of oil pan

(upper).

• Remove old liquid gasket from the bolt holes and threads.

CAUTION:

Never scratch or damage the mating surface when cleaning
off old liquid gasket.

: Engine front

PBIC3146J

JPBIA0276ZZ

PBIC3953E

EM-158

< REMOVAL AND INSTALLATION >

[MR20DD]

OIL PAN (LOWER)

b.

Apply a continuous bead of liquid gasket 

 with a tube presser

(commercial service tool) as shown in the figure. 

Use Genuine Liquid Gasket (Three Bond 1217H) or equiva-
lent.

CAUTION:

Attaching should be done within 5 minutes after liquid gas-
ket application.

c.

Tighten bolts in numerical order as shown in the figure. 

2.

Install drain plug.

3.

Install in the reverse order of removal after this steps.
NOTE:
Wait at least 30 minutes after oil pan is installed before pouring engine oil.

Inspection

INFOID:0000000010715480

INSPECTION AFTER REMOVAL

Clean oil strainer portion [part of the oil pan (upper)] if any object attached.

INSPECTION AFTER INSTALLATION

1.

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

LU-22, "Inspection"

.

2.

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

3.

Stop engine and wait for 10 minutes.

4.

Check the engine oil level again. Refer to 

LU-22, "Inspection"

.

: Oil pan (lower)

: Engine outside

PBIC3611J

: Engine front

PBIC3146J

HIGH PRESSURE FUEL PUMP AND FUEL HOSE

EM-159

< REMOVAL AND INSTALLATION >

[MR20DD]

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HIGH PRESSURE FUEL PUMP AND FUEL HOSE

Exploded View

INFOID:0000000010715481

CAUTION:

Never remove or disassemble parts unless instructed as shown in the figure.

Removal and Installation

INFOID:0000000010715482

REMOVAL

WARNING:

• Be sure to read 

EM-124, "Precaution for Handling High Pressure Fuel System"

 when working on the

high pressure fuel system.

• Put a “CAUTION: FLAMMABLE” sign in the workshop.

High pressure fuel pump insulator

High pressure fuel pump

O-ring

High pressure fuel pump lifter

Fuel rail connector

Fuel tube

Bracket

Fuel pump connector protector

Fuel feed hose

To centralized under-floor piping

: Engine front

: N·m (kg-m, ft-lb)

: N·m (kg-m, in-lb)

: Always replace after every disassembly.

: Should be lubricated with oil.

: Indicates that the parts is connected at points with same symbols in actual vehicle.

JSBIA4597GB

EM-160

< REMOVAL AND INSTALLATION >

[MR20DD]

HIGH PRESSURE FUEL PUMP AND FUEL HOSE

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

2 

fire extinguisher.

• Never smoke while servicing fuel system. Keep open flames and sparks away from the work area.
• To avoid the danger of being scalded, never drain engine coolant when engine is hot.

1.

Release fuel pressure. Refer to 

ECM-135, "Work Procedure"

.

2.

Remove fuel pump connector protector, and remove high pressure fuel pump insulator.

3.

Disconnect quick connector 

 with the following procedure.

a.

Disconnect fuel feed hose 

 from bracket hose clamp 

.

b.

Disengage 

 and pull up 

 the pawl of the fuel feed hose con-

nector retainer 

 to disconnect the fuel feed hose from high

pressure fuel pump.
NOTE:
If the fuel feed hose is stuck, hold the fuel pipe by hand and dis-
connect it by pushing and pulling.

CAUTION:

• Keep parts away from heat source. Especially, be careful

when welding is performed around them.

• Never expose parts to battery electrolyte or other acids.
• Never bent or twist connection between quick connector

and fuel feed hose (with damper) during installation/
removal.

• Pull quick connector holding 

.

• Never remove the retainer.
• Prepare a tray and waste beforehand as fuel leaks out.
• Never pull with lateral force applied. O-ring inside quick

connector may be damaged.

• To prevent damage to each joint and protect it from the

entry of foreign matter, cover the joint with plastic bag 
or an equivalent.

4.

Remove intake manifold. Refer to 

EM-149, "Removal and Installation"

.

5.

Remove fuel tube.

6.

Remove fuel rail connector.

JPBIA4376ZZ

Retainer color

: Red

JPBIA4377ZZ

JPBIA4378ZZ