Nissan Murano Z51. Manual - part 630

EC-528

< PREPARATION >

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PREPARATION

PREPARATION

PREPARATION

Special Service Tools

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The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Commercial Service Tools

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Tool number
(Kent-Moore No.)
Tool name

Description

(J-44321)
Fuel pressure gauge 
kit

Checks fuel pressure

(J-44321-6)
Fuel pressure adapter

Connects fuel pressure gauge to quick connector 
type fuel lines

LEC642

LBIA0376E

Tool name
(Kent-Moore No.)

Description

(J-45488)
Quick connector re-
lease

Removes fuel tube quick connectors in engine 
room

Leak detector 
i.e.: (J-41416)

Locates the EVAP leakage

EVAP service port 
adapter
i.e.: (J-41413-OBD)

Applys positive pressure through EVAP service 
port

PBIC0198E

S-NT703

S-NT704

PREPARATION

EC-529

< PREPARATION >

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Fuel filler cap adapter
i.e.: (MLR-8382)

Checks fuel tank vacuum relief valve opening 
pressure

Socket wrench

Removes and installs engine coolant temperature 
sensor

Oxygen sensor thread 
cleaner
i.e.: (J-43897-18)
(J-43897-12)

Reconditions the exhaust system threads before 
installing a new oxygen sensor. Use with anti-
seize lubricant shown below.
a: 18 mm diameter with pitch 1.5 mm for Zirco-
nia Oxygen Sensor
b: 12 mm diameter with pitch 1.25 mm for Tita-
nia Oxygen Sensor

Anti-seize lubricant 

i.e.: (Permatex

TM

 

133AR or equivalent 
meeting MIL specifica-
tion MIL-A-907)

Lubricates oxygen sensor thread cleaning tool 
when reconditioning exhaust system threads.

Tool name
(Kent-Moore No.)

Description

S-NT815

S-NT705

AEM488

S-NT779

EC-530

< PERIODIC MAINTENANCE >

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FUEL PRESSURE

PERIODIC MAINTENANCE

FUEL PRESSURE

Inspection

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FUEL PRESSURE RELEASE

 With CONSULT-III

1.

Turn ignition switch ON.

2.

Perform “FUEL PRESSURE RELEASE” in “WORK SUPPORT” mode with CONSULT-III.

3.

Start engine.

4.

After engine stalls, crank it 2 or 3 times to release all fuel pressure.

5.

Turn ignition switch OFF.

 Without CONSULT-III

1.

Remove fuel pump fuse (2) located in IPDM E/R (1).

2.

Start engine.

3.

After engine stalls, crank it 2 or 3 times to release all fuel pres-
sure.

4.

Turn ignition switch OFF.

5.

Reinstall fuel pump fuse after servicing fuel system.

FUEL PRESSURE CHECK

CAUTION:

Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.
NOTE:
• Prepare pans or saucers under the disconnected fuel line because the fuel may spill out. The fuel

pressure cannot be completely released because Z51 models do not have fuel return system.

• Be careful not to scratch or get the fuel hose connection area dirty when servicing, so that the quick

connector o-ring maintains seal ability.

• Use Fuel Pressure Gauge Kit [SST (J-44321)] and Fuel Pressure Adapter [SST (J-44321-6)] to check

fuel pressure.

1.

Release fuel pressure to zero.

2.

Remove fuel hose using Quick Connector Release [SST (J-45488)].
• Do not twist or kink fuel hose because it is plastic hose.
• Do not remove fuel hose (1) from quick connector.
• Keep fuel hose connections clean.

3.

Install Fuel Pressure Adapter [SST (J-44321-6)] (B) and Fuel
Pressure Gauge kit [SST (J44321)] (A) as shown in figure.
• Do not distort or bend fuel rail tube when installing fuel pres-

sure gauge adapter.

• When reconnecting fuel hose, check the original fuel hose for

damage and abnormality.

4.

Turn ignition switch ON (reactivate fuel pump) and check for fuel
leakage.

5.

Start engine and check for fuel leakage.

6.

Read the indication of fuel pressure gauge kit [SST (J-44321)].
• During fuel pressure check, check for fuel leakage from fuel

connection every 3 minutes.

JMBIA1659ZZ

At idling

: Approximately 350 kPa (3.57 kg/cm

2

, 51 psi)

JMBIA1127ZZ

FUEL PRESSURE

EC-531

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7.

If result is unsatisfactory, go to next step.

8.

Check the following.
• Fuel hoses and fuel tubes for clogging
• Fuel filter for clogging
• Fuel pump
• Fuel pressure regulator for clogging

9.

If OK, replace fuel pressure regulator.
If NG, repair or replace malfunctioning part.

10. Before disconnecting Fuel Pressure Gauge kit [SST (J-44321)] and Fuel Pressure Adapter [SST (J-

44321-6)], release fuel pressure to zero.