2006 NISSAN VERSA fuel

EM-62Revision: June 2006
CYLINDER HEAD
2007 Versa
CYLINDER HEADPFP:11041
On-Vehicle ServiceEBS00T6K
CHECKING COMPRESSION PRESSURE
1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressure. Refer to EC-81, "
FUEL PRESSURE RELEASE" .
3. Disconnect fuel pump fuse (1) to avoid fuel injection during mea-
surement.
4. Remove engine cover. Refer to EM-18, "
Components" .
5. Remove ignition coil and spark plug from each cylinder. Refer to EM-30, "
IGNITION COIL, SPARK PLUG
AND ROCKER COVER" .
6. Connect an engine tachometer (not required in use of CONSULT-II).
7. Install a suitable compression tester with an adapter onto spark
plug hole.

Use the adapter whose picking up end inserted to spark plug
hole is smaller than 20 mm (0.79 in) in diameter. Otherwise, it
may be caught by cylinder head during removal.
8. With accelerator pedal fully depressed, turn ignition switch to “START” for cranking. When the gauge
pointer stabilizes, read the compression pressure and the engine rpm. Perform these steps to check each
cylinder.
Compression pressure:
Unit: kPa (bar, kg/cm2 psi) /rpm
CAUTION:
Always use fully a changed battery to obtain the specified engine speed.
: Vehicle front
PBIA9861J
LBIA0459E
SBIA0533E
Standard Minimum Differential limit between cylinders
1,500 (15.0, 15.3, 217.6) / 200 1,200 (12.0, 12.2, 174) / 200 100 (1, 1, 15) / 200

CYLINDER HEAD
EM-63
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Revision: June 20062007 Versa

If the engine speed is out of the specified range, check battery liquid for proper gravity. Check engine
speed again with normal battery gravity.

If compression pressure is below minimum value, check valve clearances and parts associated with
combustion chamber (Valve, valve seat, piston, piston ring, cylinder bore, cylinder head, cylinder head
gasket). After the checking, measure the compression pressure again.

If some cylinder has low compression pressure, pour small amount of engine oil into the spark plug hole
of the cylinder to re-check it for compression.
–If the added engine oil improves the compression, piston rings may be worn out or damaged. Check
piston rings and replace if necessary.
–If the compression pressure remains at low level despite the addition of engine oil, valves may be mal-
functioning. Check valves for damage. Replace valve or valve seat accordingly.

If two adjacent cylinders have respectively low compression pressure and their compression remains
low even after the addition of engine oil, cylinder head gasket is leaking. In such a case, replace cylin-
der head gasket.
9. After inspection is completed, install removed parts.
10. Start the engine, and confirm that the engine runs smoothly.
11. Perform trouble diagnosis. If DTC appears, erase it. Refer to EC-83, "
TROUBLE DIAGNOSIS" .
ComponentsEBS00U7R
Removal and InstallationEBS00U7S
REMOVAL
WA RN ING:

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

Be sure to work in a well ventilated area and furnish workshop with a CO2 fire extinguisher.

Do not smoke while servicing fuel system. Keep open flames and sparks away from the work area.
1. Release the fuel pressure. Refer to EC-81, "
FUEL PRESSURE RELEASE" .
2. Drain engine coolant and engine oil. Refer to CO-8, "
ENGINE COOLANT" and LU-5, "ENGINE OIL" .
3. Remove front fender protector (RH). Refer to EI-22, "
FENDER PROTECTOR" .
4. Remove drive belt. Refer to EM-13, "
Removal and Installation" .
5. Remove the following components and related parts.

Exhaust manifold; Refer to EM-21, "EXHAUST MANIFOLD" .

Intake manifold; Refer to EM-18, "INTAKE MANIFOLD" .

Fuel tube and fuel injector assembly; Refer to EM-33, "FUEL INJECTOR AND FUEL TUBE" .
1. Cylinder head assembly 2. Cylinder head bolt 3. Cylinder head gasket
A. Refer to EM-65
PBIC3542J

EM-74Revision: June 2006
ENGINE ASSEMBLY
2007 Versa

Use either 2-pole lift type or separate type lift as best you can. If board-on type is used for
unavoidable reasons, support at the rear axle jacking point with a transmission jack or similar tool
before starting work, in preparation for the backward shift of center of gravity.

For supporting points for lifting and jacking point at rear axle, refer to GI-42, "Garage Jack and
Safety Stand and 2-Pole Lift" .
REMOVAL
Remove the engine and the transaxle assembly from the vehicle downward. Separate the engine and the tran-
saxle.
1. Remove engine undercover
2. Drain engine coolant from radiator. Refer to CO-8, "
Changing Engine Coolant" .
CAUTION:

Perform this step when the engine is cold.

Do not spill engine coolant on drive belt.
3. Remove front fender protector (RH and LH); Refer to EI-22, "
FENDER PROTECTOR" .
4. Remove exhaust front tube; Refer to EX-3, "
EXHAUST SYSTEM" .
5. Remove drive shafts (LH and RH) from steering knuckle. Refer to FAX-8, "
FRONT DRIVE SHAFT" .
6. Remove transaxle joint bolts which pierce at oil pan (upper) lower rear side. Refer to AT - 2 5 3 , "
TRAN-
SAXLE ASSEMBLY" (A/T models), CVT-207, "TRANSAXLE ASSEMBLY" (CVT) or MT-15, "TRAN-
SAXLE ASSEMBLY" (M/T models).
7. Remove rear torque rod (1).
NOTE:
A/T model shown CVT and M/T models similar.
8. Remove hood assembly. Refer to BL-14, "
HOOD" .
9. Remove cowl top cover and cowl top extension assembly. Refer to EI-20, "
COWL TOP" .
10. Release fuel pressure. Refer to EC-81, "
FUEL PRESSURE RELEASE" .
11. Remove battery and battery tray; Refer to SC-4, "
BATTERY" .
12. Remove drive belt; Refer to EM-13, "
Components" .
13. Remove air duct and air cleaner case assembly; Refer to EM-16, "
AIR CLEANER AND AIR DUCT" .
14. Remove cooling fan assembly.
15. Remove radiator hose (upper and lower). Refer to CO-11, "
RADIATOR" .
16. Disconnect A/T, CVT fluid cooler hoses. Refer to CO-11, "
RADIATOR"
17. Disconnect all connections of engine harness around the engine mounting insulator (LH), and then tem-
porarily secure the engine harness into the engine side.
CAUTION:
Protect connectors using a resin bag to protect against foreign materials during the operation.
18. Disconnect fuel feed hose at engine side. Refer to EM-33, "
Components" .
19. Disconnect heater hoses, and install plugs them to prevent engine coolant from draining. Refer to CO-20,
"Components" .
20. Disconnect control cable from transaxle. Refer to CVT-191, "
SHIFT CONTROL SYSTEM" (CVT) or AT -
229, "SHIFT CONTROL SYSTEM" (A/T), MT-12, "CONTROL LINKAGE" (MT).
21. Remove ground cable at transaxle side.
22. Remove ground cable between front cover and vehicle.
23. Remove alternator. Refer to SC-24, "
CHARGING SYSTEM" .
LBIA0460E

EM-76Revision: June 2006
ENGINE ASSEMBLY
2007 Versa
INSTALLATION
Note the following, and install in the reverse order of removal.

Do not allow engine oil to get on engine mounting insulator. Be careful not to damage engine mounting
insulator.

When installation directions are specified, install parts according to the directions. Refer to EM-73, "Com-
ponents" .

Make sure that each mounting insulator is seated properly, and tighten nuts and bolts.

Tighten engine mounting insulator (RH) bolts in the numerical
order shown.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak and exhaust gases leak.

Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-11, "
RECOMMENDED FLUIDS AND LUBRICANTS" .

Use procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.

Run engine to check for unusual noise and vibration.

Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.

Bleed air from lines and hoses of applicable lines, such as in cooling system.

After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.: Vehicle front
WBIA0785E
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —

FL-1
FUEL SYSTEM
B ENGINE
CONTENTS
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SECTION FL
A
FL
Revision: June 20062007 Versa PRECAUTIONS .......................................................... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 2
PREPARATION ........................................................... 3
Special Service Tools ............................................... 3
Commercial Service Tools ........................................ 3
FUEL SYSTEM ........................................................... 4
Checking Fuel Lines ................................................. 4
General Precautions ................................................ 4
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND
FUEL PUMP ASSEMBLY ........................................... 5Components ............................................................. 5
Removal and Installation .......................................... 5
REMOVAL ............................................................. 5
INSPECTION AFTER REMOVAL ......................... 7
INSTALLATION ..................................................... 7
INSPECTION AFTER INSTALLATION .................. 8
FUEL TANK ................................................................ 9
Components ............................................................. 9
Removal and Installation .......................................... 9
REMOVAL ............................................................. 9
INSTALLATION ................................................... 12
INSPECTION AFTER INSTALLATION ................ 12
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 13
Standard and Limit .................................................. 13
FUEL TANK ......................................................... 13

PREPARATION
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Revision: June 20062007 Versa
PREPARATIONPFP:00002
Special Service ToolsEBS00UHL
The actual shapes of the Kent-Moore tools may differ from those of the special tools illustrated here.
Commercial Service ToolsEBS00UHM
Tool number
(Kent-Moore No.)
Tool nameDescription
KV991J0090
(J-46214)
Fuel tank lock ring toolRemoving and installing fuel tank lock ring
LBIA0353E
Tool nameDescription
Power toolsLoosening bolts and nuts
PBIC0190E

FL-4Revision: June 2006
FUEL SYSTEM
2007 Versa
FUEL SYSTEMPFP:17503
Checking Fuel LinesEBS00TSF
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.
General PrecautionsEBS00TSG
WAR NIN G:
When replacing fuel line parts, be sure to observe the following.

Put a “CAUTION: FLAMMABLE” sign in the work area.

Be sure to work in a well ventilated area and have a CO2 fire extinguisher.

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

Put drained fuel in an explosion-proof container and put the lid on securely. Keep the container in
safe area.
CAUTION:

Use gasoline required by the regulations for octane number. Refer to GI-6, "Precautions for Fuel
(Unleaded Regular Gasoline Recommended)" .

Before removing fuel line parts, perform the following procedures:
–Release fuel pressure from the fuel lines. Refer to EC-81, "FUEL PRESSURE RELEASE" .
–Disconnect the battery ground cable.

Always replace O-rings and clamps with new ones.

Do not kink or twist tubes when they are being installed.

Perform work on level surface.

Do not tighten hose clamps excessively to avoid damaging hoses.

After connecting fuel tube quick connectors, make sure quick connectors are secure.
Ensure that connector and resin tube do not contact any adjacent parts.

After installing tubes, make sure there is no fuel leakage at connections in the following steps.
–Apply fuel pressure to fuel lines by turning ignition switch ON (without starting the engine). Then
check for fuel leaks at the fuel tube connections.
–Start engine and rev it up and check for fuel leaks at connections.

Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used,
the MIL may come on.

For servicing “Evaporative Emission System” parts, refer to EC-31, "EVAPORATIVE EMISSION
SYSTEM" .

For servicing "On Board Refueling Vapor Recovery (ORVR)" parts, refer to EC-38, "ON BOARD
REFUELING VAPOR RECOVERY (ORVR)" .
SM A80 3A

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
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Revision: June 20062007 Versa
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLYPFP:17042
ComponentsEBS00TSH
Removal and InstallationEBS00TSI
REMOVAL
WA RN ING:
Be sure to read “General Precautions” before working on the fuel system. Refer to FL-4, "
General Pre-
cautions" .
1. Check fuel level with the vehicle on a level surface. If the fuel
gauge indicates more than the level as shown (7/8 full), drain
fuel from the fuel tank until the fuel gauge indicates level as
shown (7/8 full).
NOTE:
Fuel will be spilled when removing fuel pump assembly if fuel
level is above the fuel pump assembly installation surface.

As a guide, fuel level is at the level as shown or below when
approximately 12 (3 1/8 US gal, 2 5/8 Imp gal) of fuel is
drained from a full fuel tank.

In case fuel pump does not operate, perform the following
procedure.
a. Insert fuel tubing of less than 25 mm (0.98 in) in diameter into fuel filler tube through fuel filler opening to
drain fuel from fuel filler tube.
b. Disconnect fuel filler hose from fuel filler tube. Refer to FL-9, "
FUEL TANK" .
c. Insert fuel tubing into fuel tank through fuel filler hose to drain fuel from fuel tank.
2. Open fuel door and unscrew the fuel filler cap to release the pressure inside the fuel tank.
3. Release the fuel pressure from the fuel lines. Refer to EC-81, "
FUEL PRESSURE RELEASE" .
4. Remove rear seat bottom. Refer to SE-14, "
REAR SEAT" .
5. Turn the four retainers 90° in a clockwise direction and remove the fuel pump inspection hole cover.
1. Lock ring 2. Fuel level sensor unit, fuel filter and fuel pump assembly 3. O-ring
4. Fuel tank
WCIA0590E
KBIA3505J