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SPARK PLUG
SPARK PLUG
Exploded ViewINFOID:0000000005398041
Removal and InstallationINFOID:0000000005398042
REMOVAL
1. Remove intake manifold. Refer to
EM-28, "Removal and Installation".
2. Remove ignition coil. Refer to EM-46, "
Removal and Installation".
3. Remove spark plug with a suitable tool.
INSPECTION AFTER REMOVAL
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.
1. Ignition coil 2. Spark plug
PBIC3662E
PBIC3871E
Cleaner air
pressure:Less than 588 kPa (6 kg/cm2, 85 psi)
Cleaning time: Less than 20 seconds
SMA773C
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SPARK PLUGEM-19
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•
Checking and adjusting plug gap is not required between
change intervals.
INSTALLATION
Installation is in the reverse order of removal.
JPBIA0031ZZ
Make : Denso
Part number : FXE20HE-11
Gap (nominal) : 1.1 mm (0.043 in)
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![NISSAN LATIO 2010 Service Repair Manual EM-20
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CAMSHAFT VALVE CLEARANCE
CAMSHAFT VALVE CLEARANCE
Inspection and AdjustmentINFOID:0000000005398043
INSPECTION
Perform inspection as follows after removal, inst NISSAN LATIO 2010 Service Repair Manual EM-20
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CAMSHAFT VALVE CLEARANCE
CAMSHAFT VALVE CLEARANCE
Inspection and AdjustmentINFOID:0000000005398043
INSPECTION
Perform inspection as follows after removal, inst](/manual-img/5/57358/w960_57358-2378.png)
EM-20
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CAMSHAFT VALVE CLEARANCE
CAMSHAFT VALVE CLEARANCE
Inspection and AdjustmentINFOID:0000000005398043
INSPECTION
Perform inspection as follows after removal, installation or
replacement of camshaft or valve-related parts, or if
there is unusual engine conditions regarding valve clearance.
1. Remove rocker cover. Refer to EM-46, "
Exploded View".
2. Measure the valve clearance with the following procedure:
a. Set No. 1 cylinder at TDC of its compression stroke. • Rotate crankshaft pulley (2) clockwise and align TDC mark(without paint mark) (A) to timing indicator (1) on front cover.
• At the same time, make sure that both intake and exhaust cam noses of No. 1 cylinder face inside as shown.
• If they do not face inside, rotate crankshaft pulley once more (360 degrees) and align as shown.
b. Use a feeler gauge, measure the clearance between valve lifter and camshaft.
• Measure the valve clearances at locations marked “ ×” as
shown in the table below [locations indicated with black arrow
( ) as shown] with a feeler gauge.
B : White paint mark (Not use for service)
PBIC3673E
1 : Camshaft (INT)
2 : Camshaft (EXH)
: Engine front
PBIC3359J
Valve Clearance: Refer to EM-112, "Camshaft".
SEM139D
A : No. 1 cylinder compression TDC
: Engine front
Measuring position No. 1 CYL. No. 2 CYL. No. 3 CYL. No. 4 CYL.
Measurement po-
sition EXH
××
INT ××
PBIC3707E
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c. Rotate crankshaft pulley (2) one revolution (360 degrees) and
align TDC mark (without paint mark) ( NISSAN LATIO 2010 Service Repair Manual CAMSHAFT VALVE CLEARANCEEM-21
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c. Rotate crankshaft pulley (2) one revolution (360 degrees) and
align TDC mark (without paint mark) (](/manual-img/5/57358/w960_57358-2379.png)
CAMSHAFT VALVE CLEARANCEEM-21
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c. Rotate crankshaft pulley (2) one revolution (360 degrees) and
align TDC mark (without paint mark) (A) to timing indicator (1) on
front cover.
• Measure the valve clearance at locations marked “ ×” as shown
in the table below [locations indicated with black arrow ( ) as
shown] with a feeler gauge.
3. If out of standard, perform adjustment procedure.
ADJUSTMENT
• Perform adjustment depending on selected head thickness of valve lifter.
1. Remove camshaft. Refer to EM-59, "
Exploded View".
2. Remove valve lifters at the loca tions that are out of the standard.
3. Measure the center thickness of the removed valve lifters with a micrometer (A).
4. Use the equation below to calculate valve lifter thickness for replacement.
B : White paint mark (Not use for service)
PBIC3673E
A : No. 4 cylinder compression TDC : Engine front
Measuring position No. 1 CYL. No . 2 CYL. No. 3 CYL. No. 4 CYL.
Measurement
point EXH
××
INT ××
PBIC3708E
PBIC3195J
Valve lifter thickness calculation: t = t1 + (C1– C2)
t = Valve lifter thickness to be replaced
t
1= Removed valve lifter thickness
C
1= Measured valve clearance
C
2= Standard valve clearance: Intake : 0.30 mm (0.012 in)
Exhaust : 0.33 mm (0.013 in)
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EM-22
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CAMSHAFT VALVE CLEARANCE
• Thickness of new valve lifter (B) can be identified by stamp
mark (A) on the reverse side (inside the cylinder).
• Stamp mark “300” indicates 3.00 mm (0.118 in) in thickness.
NOTE:
Available thickness of valve lifter: 26 sizes range 3.00 to 3.50 mm (0.1181 to 0.1378 in) in steps of 0.02
mm (0.0008 in) (when manufactured at factory). Refer to EM-112, "
Camshaft".
5. Install the selected valve lifter.
6. Install camshaft. Refer to EM-59, "
Exploded View".
7. Manually rotate crankshaft pulley a few rotations.
8. Make sure that valve clearances for cold engine are wit hin specifications by referring to the specified val-
ues.
9. Install all removed parts in the reverse order of removal.
10. Warm up the engine, and check for unusual noise and vibration.
PBIC3196J
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COMPRESSION PRESSURE
InspectionINFOID:0000000005398044
1. Warm up engine thoroughly. Then, stop it.
2. Rel NISSAN LATIO 2010 Service Repair Manual COMPRESSION PRESSUREEM-23
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COMPRESSION PRESSURE
InspectionINFOID:0000000005398044
1. Warm up engine thoroughly. Then, stop it.
2. Rel](/manual-img/5/57358/w960_57358-2381.png)
COMPRESSION PRESSUREEM-23
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COMPRESSION PRESSURE
InspectionINFOID:0000000005398044
1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressure. Refer to
EC-496, "
Inspection".
3. Remove ignition coil and spark plug from each cylinder. Refer to EM-46, "
Exploded View".
4. Connect an engine tachometer (not required in use of CONSULT-III).
5. Install a compression tester (B) with an adapter (commercial service tool) (A) onto spark plug hole.
• Use the adapter whose picking up end inserted to spark plughole is smaller than 20 mm (0.79 in) in diameter. Otherwise, it
may be caught by cylinder head during removal.
6. 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.
CAUTION:
Always use fully a charged battery to obtain the specified engine speed.
• 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, pi ston 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 pis-
ton 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 cylinder
head gasket.
7. After inspection is completed, install removed parts.
8. Start the engine, and confirm that the engine runs smoothly.
9. Perform trouble diagnosis. If DTC appears, erase it. Refer to EC-106, "
Description".
PBIC3730E
SBIA0533E
Compression Pressure: Refer to E M - 111 , "General Specification".
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EM-24
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DRIVE BELT IDLER PULLEY
ON-VEHICLE REPAIR
DRIVE BELT IDLER PULLEY
Exploded ViewINFOID:0000000005398045
Removal and InstallationINFOID:0000000005398046
REMOVAL
1. Remove drive belt. Refer to
EM-15, "Removal and Installation".
2. Remove the lock nut, and then remove the plate, idler pulley, and washer.
3. Remove the center shaft together with the spacer with inserting the adjusting bolt.
INSTALLATION
1 : Generator bracket
2 : Center shaft
3 : Spacer
4 : Adjusting bolt
5: Washer
6 : Idler pulley
7: Plate
PBIC3644E
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1. Insert the center shaft (1) into the slide groove of the spacer (2).
Fully screw in the adjusting bolt (3) in the belt loosening direc-
tion ( ).
• At that time, place the flange (a) of the adjusting bolt and theseat (b) of the center shaft on the spacer.
2. Place each surface (c, d) of the spacer on the generator bracket. Install the washer, idler pulley, and plate, and then temporarily
tighten the lock nut.
3. Installation is in the reverse order of removal. : 4.4 N·m (0.45 kg-m, 39 in-lb)
PBIC3885E
Revision: January 20102010 Versa