EM-1
ENGINE
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SECTION EM
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CONTENTS
ENGINE MECHANICAL
HR16DE
PRECAUTION ....... ........................................
3
PRECAUTIONS .............................................. .....3
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
3
Precaution for Procedure without Cowl Top Cover ......3
Draining Engine Coolant ...........................................3
Disconnecting Fuel Piping .........................................3
Removal and Disassembly ........................................3
Inspection, Repair and Replacement ........................4
Assembly and Installation .........................................4
Parts Requiring Angle Tightening ....................... ......4
Precaution for Liquid Gasket .....................................4
PREPARATION ............................................6
PREPARATION .............................................. .....6
Special Service Tools .......................................... ......6
Commercial Service Tools ........................................7
BASIC INSPECTION ...................................10
CAMSHAFT VALVE CLEARANCE ............... ....10
Inspection and Adjustment .................................. ....10
COMPRESSION PRESSURE ............................13
Inspection ............................................................ ....13
SYMPTOM DIAGNOSIS ..............................14
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING ........................ ....
14
NVH troubleshooting Chart ................................. ....14
PERIODIC MAINTENANCE .........................16
DRIVE BELT ................................................... ....16
Exploded View .................................................... ....16
Removal and Installation .........................................16
Inspection ............................................................ ....17
Adjustment ...............................................................17
AIR CLEANER FILTER .....................................19
Exploded View .........................................................19
Removal and Installation .........................................19
SPARK PLUG ...................................................21
Exploded View .........................................................21
Removal and Installation .........................................21
REMOVAL AND INSTALLATION ...............24
DRIVE BELT IDLER PULLEY ..........................24
Exploded View ..................................................... ....24
Removal and Installation .........................................24
AIR CLEANER AND AIR DUCT .......................26
Exploded View .........................................................26
Removal and Installation .........................................26
INTAKE MANIFOLD .........................................28
Exploded View .........................................................28
Removal and Installation .........................................28
EXHAUST MANIFOLD ......................................31
Exploded View .........................................................31
Removal and Installation .........................................31
OIL PAN AND OIL STRAINER .........................34
Exploded View .........................................................34
Removal and Installation (Lower Oil Pan) ...............34
Removal and Installation (Upper Oil Pan) ........... ....37
FUEL INJECTOR AND FUEL TUBE ................40
Exploded View .........................................................40
Removal and Installation .........................................40
IGNITION COIL .................................................47
Exploded View .........................................................47
Removal and Installation .........................................47
ROCKER COVER .............................................48
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PRECAUTIONSEM-3
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental
Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000012431679
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SR and SB section of
this Service Manual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the
battery and wait at least three mi nutes before performing any service.
Precaution for Procedure without Cowl Top CoverINFOID:0000000012431680
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
Draining Engine CoolantINFOID:0000000012431681
Drain engine coolant and engine oil when the engine is cooled.
Disconnecting Fuel PipingINFOID:0000000012431682
• Before starting work, check no fire or spark producing items are in the work area.
• Release fuel pressure before disconnecting and disassembly.
• After disconnecting pipes, plug openings to stop fuel leakage.
Removal and DisassemblyINFOID:0000000012431683
• When instructed to use SST, use specified tools. Alwa ys be careful to work safely, avoid forceful or unin-
structed operations.
• Use care to avoid damage to mating or sliding surfaces.
PIIB3706J
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COMPRESSION PRESSUREEM-13
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COMPRESSION PRESSURE
InspectionINFOID:0000000012431691
1. Warm up engine to full operating temperature and then turn it off.
2. Release fuel pressure. Refer to
EC-137, "
Work Procedure".
3. Remove ignition coil and spark plug from each cylinder. Refer to EM-48, "
Exploded View".
4. Connect engine tachometer (not required in use of CONSULT).
5. Install compression gauge (B) with an adapter (A) into spark plug hole.
• Use an adapter with a diameter (a) smaller than 20 mm (0.79in). Otherwise, it may be caught by cylinder head during
removal.
6. With accelerator pedal fully depressed, turn ignition switch to »»» for cranking. When the gauge pointer stabilizes, read the compression pressure and the engi ne rpm. Perform these steps to check each cylin-
der.
CAUTION:
Always use a fully charged battery to obtain the specified engine speed.
• If the engine speed is out of the specified range, check the battery. Check the engine speed again with a
fully charged battery.
• If some cylinders have low compression pressure, pour a small amount of engine oil into the spark plug hole to recheck the compression.
- If the added engine oil improves the compression, the piston rings may be worn or damaged. Check the piston rings and replace if necessary.
- If the compression pressure remains low despite the addition of engine oil, the valves may be malfunc-
tioning. Check the valves for damage. Replace the valve or valve seat as necessary.
• If two adjacent cylinders have respectively low compression pressure and their compression remains low even after the addition of engine oil the head gasket may be leaking, or valves in adjacent cylinders
may be damaged. Inspect and repair as required.
• If the compression pressure is below the minimum value, check the valve clearances and parts associ-
ated with the combustion chamber (valve, valve seat , piston, piston ring, cylinder bore, cylinder head,
cylinder head gasket). After repairing, measure the compression pressure again.
7. After inspection is completed, install removed parts.
8. Start the engine, and ensure that the engine runs smoothly.
9. Perform trouble diagnosis. If DTC appears, erase it. Refer to EC-120, "
Work Flow".
JPBIA4119ZZ
(a) : Less than 20 mm (0.79 in)
JPBIA0171ZZ
Compression pressure : Refer to EM-116, "General Specification".
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EM-36
< REMOVAL AND INSTALLATION >[HR16DE]
OIL PAN AND OIL STRAINER
2. Apply a continuous bead of liquid gasket (A) with a tube presser
as shown.
Use Genuine Silicone RTV S ealant or equivalent. Refer
to GI-22, "
Recommended Chemical Products and Sealants"
CAUTION:
• Installation should be done within 5 minutes after apply-
ing liquid gasket.
• Do not fill the engine with oil for at least 30 minutes after
the components are installed to allow the sealant to cure.
3. Tighten bolts in numerical order as shown.
4. Install oil pan drain plug. CAUTION:
• Do not reuse drain plug washer.
• Refer to exploded view installation di rection of drain plug washer. Refer to EM-34
.
5. Refill the engine with engine oil. Refer to LU-8, "
Refilling".
INSPECTION AFTER INSTALLATION
• 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, "
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 leak- age at connection points.
• Start engine. With engine speed increased, che ck again for fuel leakage at connection points.
• Run engine to check for unusual noise and vibration. NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal and installation, slack in the guide
may generate a pounding noise during and just after engine start. However, this is normal. Noise will stop
after hydraulic pressure rises.
• Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gas, or any oils/fluids including engine oil and engine coolant.
• Bleed air from passages in lines and hoses, such as in cooling system.
• After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to spec-
ified level, if necessary.
(1) : Oil pan (lower)
(a) : 7.5 - 9.5 mm (0.295 - 0.374 in)
(b) : 4.0 - 5.0 mm (0.157 - 0.197 in) diameter
: Engine outside
JSBIA1128ZZ
: Engine front
JSBIA1126ZZ
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OIL PAN AND OIL STRAINEREM-39
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c. Press-fit the rear oil seal using a suitable drift (A) with outer
diameter 113 mm (4.45 in) and inner diameter 90 mm (3.54 in).
• Press-fit to the specified dimensions as shown.
CAUTION:
• Do not touch the grease applied to the oil seal lip.
• Be careful not to damage the rear oil seal mounting partof oil pan (upper) and cylinder block or the crankshaft.
• Press-fit straight and check that oil seal does not curl or tilt.
d. After press-fitting the rear oil seal, completely wipe off any liquid gasket protruding to rear end surface side.
3. Installation of the remaining components is in the reverse order of removal.
INSPECTION AFTER INSTALLATION
• Before starting engine, check oil/fluid levels, includi ng engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-11, "
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 leak- age 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. NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal and installation, slack in the guide
may generate a pounding noise during and just after engine start. However, this is normal. Noise will stop
after hydraulic pressure rises.
• Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gas, or any oils/fluids including engine oil and engine coolant.
• Bleed air from passages in lines and hoses, such as in cooling system.
• After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to spec- ified level, if necessary.
• Summary of the inspection items:
*Power steering fluid, brake fluid, etc.
PBIC3660E
(1) : Rear oil seal
(A) : Rear end surface of cylinder block
PBIC3149J
Item Before starting engine Engine runningAfter engine stopped
Engine coolant LevelLeakage Level
Engine oil LevelLeakage Level
Transmission/
transaxle fluid A/T and CVT Models
LeakageLevel/Leakage Leakage
M/T Models Level/Leakage LeakageLevel/Leakage
Other oils and fluids* LevelLeakage Level
Fuel LeakageLeakageLeakage
Exhaust gas —Leakage —
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EM-40
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FUEL INJECTOR AND FUEL TUBE
FUEL INJECTOR AND FUEL TUBE
Exploded ViewINFOID:0000000012431712
Removal and InstallationINFOID:0000000012431713
WARNING:
• Put a “CAUTION: FLAMMABLE”
sign in the workshop.
• Be sure to work in a well-ventila ted area and furnish workshop with a CO
2 fire extinguisher.
• Do not smoke while servicing fuel system. Keep open flames and sparks away from the work area.
CAUTION:
Do not remove or disassemble parts unless instructed.
NOTE:
When removing components such as hoses, tubes/lines, etc. , cap or plug openings to prevent fluid from spill-
ing.
REMOVAL
1. Release the fuel pressure. Refer to EC-137, "Work Procedure".
2. Remove intake manifold. Refer to EM-28, "
Removal and Installation".
1. Stud bolt 2. O-ring (green) 3. Fuel injector (front)
4. Clip 5. Fuel injector (rear) 6. O-ring (black)
7. Fuel tube protector 8. Fuel tube9. Clamp
10. Quick connector cap (engine side) 11. Fuel feed hose 12. Quick connector cap (floor piping-side)
13. Fuel connector protector 14. Fuel pipeA. To centralized under-floor piping
Front
AWBIA1579ZZ
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EM-46
< REMOVAL AND INSTALLATION >[HR16DE]
FUEL INJECTOR AND FUEL TUBE
c. After connecting, check that the connection is secure:
• Visually confirm that the two retainer tabs are connected to theconnector.
• With the fuel feed hose not fix ed to the clamp, pull quick con-
nector (A) hard by hand to check that the quick connector (A)
is not disconnected from the centralized underfloor piping (1)
and that the quick connector (1) is securely connected.
9. Installation of remaining components is in the reverse order of removal.
INSPECTION AFTER INSTALLATION
Check on Fuel Leaks
1. Turn ignition switch “ON” (with the engine stopped). With fuel pressure applied to fuel piping, check there are no fuel leaks at connection points. Refer to.
NOTE:
Use mirrors for checking points out of clear sight.
2. Start the engine. With engine speed increased, check again that there are no fuel leaks at connection
points.
• Perform procedures for “Throttle Valve Closed Posi tion Learning” after finishing repairs. Refer to EC-
129, "Description".
• If electric throttle control actuator is replaced, perform procedures for “Idle Air Volume Learning” after
finishing repairs. Refer to EC-130, "
Description".
CAUTION:
Do not touch the engine immediately after stopping, as the engine becomes extremely hot.
PBIC3795E
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TIMING CHAINEM-59
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• Secure crankshaft pulley with a suitable tool and tighten crankshaft pulley bolt.
a. Apply new engine oil to thread and seat surfaces of crankshaft pulley bolt.
b. Tighten crankshaft pulley bolt.
c. Put a paint mark (B) on crankshaft pulley, mating with any one of six easy to recognize angle marks (A) on crankshaft bolt flange
(1).
d. Turn another 60 degrees clockwise (angle tightening). • Check the tightening angle with movement of one angle mark.
10. Check that crankshaft turns smoothly by rotating by hand clockwise using suitable tool.
11. Installation of the remaining components is in the reverse order of removal.
INSPECTION AFTER INSTALLATION
• Before starting engine, check oil/fluid levels, includi ng engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-11, "
Fluids and Lubricants".
• Use procedure below to check for fuel leaks.
• Turn ignition switch ON (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leaks at connection points.
• Start engine. With engine speed increased, check again for fuel leaks at connection points.
• Run engine to check for unusual noise and vibration. NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal and installation, slack in the guide
may generate a pounding noise during and just after engine start. However, this is normal. Noise will stop
after hydraulic pressure rises.
• Warm up engine thoroughly to make sure there are no lea ks of fuel, exhaust gas, or any oils/fluids including
engine oil and engine coolant.
• Bleed air from passages in lines and hoses, such as in cooling system.
• After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to spec- ified level, if necessary.
• Summary of the inspection items:
*Power steering fluid, brake fluid, etc.
Crankshaft pulley bolt : 35.0 N·m (3.6 kg-m, 26 ft-lb)
PBIC3726E
ItemBefore starting engine Engine runningAfter engine stopped
Engine coolant LevelLeaks Level
Engine oil LevelLeaks Level
Transmission/
transaxle fluid CVT Models
LeaksLevel/Leaks Leaks
M/T Models Level/Leaks LeaksLevel/Leaks
Other oils and fluids* LevelLeaks Level
Fuel LeaksLeaks Leaks
Exhaust gas —Leaks —
Revision: August 2015 2016 Versa Note
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