check engine NISSAN TEANA 2008 Service Manual

EM-22
< ON-VEHICLE MAINTENANCE >
COMPRESSION PRESSURE
COMPRESSION PRESSURE
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1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressure. Refer to EC-411, "
Inspection".
3. Disconnect fuel pump fuse to avoid fuel injection during measurement. Refer to EC-20,
"ComponentPartsLocation".
4. Remove engine cover. Refer to EM-24, "
Exploded View".
5. Remove ignition coil and spark plug from each cylinder. Refer to EM-49, "
Exploded View".
6. Connect engine tachometer (not required in use of CONSULT-III).
7. Install compression gauge with an adapter (commercial service
tool) 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.
CAUTION:
Always use a fully 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 the
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 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 recheck 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 gaskets are leaking. In such a case, replace cyl-
inder head gaskets.
9. After inspection is completed, install removed parts.
PBIC0900E
a: φ20 mm (0.79 in)
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Compression pressure : Refer to EM-135, "GeneralSpecification".

COMPRESSION PRESSURE
EM-23
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10. Start the engine, and check that the engine runs smoothly.
11. Perform trouble diagnosis. If DTC appears, erase it. Refer to EC-124, "
Description".

INTAKE MANIFOLD
EM-33
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 Tighten all mounting nuts and bolts to the specified torque in two or
more steps in numerical order shown in the figure.
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INSPECTION AFTER REMOVAL
Surface Distortion
 Check the surface distortion of the intake manifold mating surface
with a straightedge (A) and a feeler gauge (B).
 If it exceeds the limit, replace intake manifold.
: Engine front
1st step: 7.4 N·m (0.75 kg-m, 5 ft-lb)
2nd step and after: 25.5 N·m (2.6 kg-m, 19 ft-lb)
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Limit : Refer to EM-136, "Intake Manifold".
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EM-42
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OIL PAN AND OIL STRAINER
 Tighten mounting bolts in numerical order as shown in the fig-
ure.
 There are two types of mounting bolts. Refer to the following
for locating bolts.
2. Install oil strainer to oil pump.
3. Install oil pan (lower) as follows:
a. Use scraper (A) to remove old liquid gasket from mating sur-
faces.
 Remove old liquid gasket from the bolt holes and thread.
CAUTION:
Never scratch or damage the mating surfaces when clean-
ing off old liquid gasket.
b. Apply a continuous bead of liquid gasket with the tube presser
(commercial service tool) (A) to the oil pan (lower) as shown in
the figure.
Use Genuine Liquid Gasket or equivalent.
CAUTION:
Attaching should be done within 5 minutes after coating.
c. Install oil pan (lower).
 Tighten mounting bolts in numerical order as shown in the fig-
ure.
4. Install oil pan drain plug.
 Refer to the figure of components of former page for installa-
tion direction of drain plug washer. Refer to EM-38, "
Exploded
View".
5. Install in the reverse order of removal after this step.
NOTE:
At least 30 minutes after oil pan is installed, pour engine oil.
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INSPECTION AFTER REMOVAL
Clean oil strainer if any object attached.
INSPECTION AFTER INSTALLATION
1. Check the engine oil level and adjust engine oil. Refer to LU-7, "Inspection".
2. Start engine, and check there is no leakage of engine oil.M8 × 135 mm (5.31 in) : 11
M8 × 92 mm (3.62 in) : 5, 7, 8
M8 × 25 mm (0.98 in) : Except the above
PBIC1636E
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b: φ4.0 - 5.0 mm (0.157 - 0.197 in)
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PBIC0782E

OIL PAN AND OIL STRAINER
EM-43
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3. Stop engine and wait for 10 minutes.
4. Check the engine oil level again. Refer to LU-7, "
Inspection".

EM-46
< ON-VEHICLE REPAIR >
FUEL INJECTOR AND FUEL TUBE
9. Loosen mounting bolts in reverse order as shown in the figure,
and remove fuel tube and fuel injector assembly.
CAUTION:
Never tilt fuel tube, or remaining fuel in pipes may flow out
from pipes.
10. Remove fuel injector from fuel tube as follows:
a. Open and remove clip (1).
b. Remove fuel injector (2) from fuel tube (5) by pulling straight.
CAUTION:
 Be careful with remaining fuel that may go out from fuel
tube.
 Be careful not to damage injector nozzle during removal.
 Never bump or drop fuel injector.
 Never disassemble fuel injector.
11. Remove fuel damper from fuel tube.
INSTALLATION
1. Install fuel damper as follows:
a. Install new O-ring (2) to fuel tube (1) as shown. When handling
new O-ring, be careful of the following caution:
CAUTION:
 Handle O-ring with bare hands. Never wear gloves.
 Lubricate O-ring with new engine oil.
 Never clean O-ring with solvent.
 Check that O-ring and its mating part are free of foreign
material.
 When installing O-ring, be careful not to scratch it with
tool or fingernails. Also be careful not to twist or stretch
O-ring. If O-ring was stretched while it was being
attached, never insert it quickly into fuel tube.
 Insert new O-ring straight into fuel tube. Never twist it.
b. Install spacer (3) to fuel damper (4).
c. Insert fuel damper straight into fuel tube.
CAUTION:
 Insert straight, making sure that the axis is lined up.
 Never pressure-fit with excessive force.
 Insert fuel damper until (B) is touching (A) of fuel tube.
d. Tighten bolts evenly in turn.
 After tightening bolts, check that there is no gap between fuel
damper cap (5) and fuel tube.
2. Install new O-rings to fuel injector paying attention to the following.
CAUTION:
: Engine front
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3 : O-ring (green)
4 : O-ring (black)
A : Installed condition
B : Clip mounting groove
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Reference value : 130 N (13.3 kg, 29.2 lb)
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FUEL INJECTOR AND FUEL TUBE
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 Upper and lower O-ring are different. Be careful not to confuse them.
 Handle O-ring with bare hands. Never wear gloves.
 Lubricate O-ring with new engine oil.
 Never clean O-ring with solvent.
 Check that O-ring and its mating part are free of foreign material.
 When installing O-ring, be careful not to scratch it with tool or fingernails. Also be careful not to
twist or stretch O-ring. If O-ring was stretched while it was being attached, never insert it quickly
into fuel tube.
 Insert O-ring straight into fuel injector. Never decenter or twist it.
3. Install fuel injector to fuel tube as follows:
a. Insert clip (3) into clip mounting groove (F) on fuel injector (5).
 Insert clip so that protrusion (E) of fuel injector matches cutout
(C) of clip.
CAUTION:
 Never reuse clip. Replace it with new one.
 Be careful to keep clip from interfering with O-ring. If
interference occurs, replace O-ring.
b. Insert fuel injector into fuel tube (1) with clip attached.
 Insert it while matching it to the axial center.
 Insert fuel injector so that protrusion (A) of fuel tube matches
cutout (B) of clip.
 Check that fuel tube flange (G) is securely fixed in flange fixing
groove (D) on clip.
c. Check that installation is complete by checking that fuel injector
does not rotate or come off.
 Check that protrusions of fuel injectors and fuel tubes are
aligned with cutouts of clips after installation.
4. Install fuel tube and fuel injector assembly to intake manifold.
CAUTION:
Be careful not to let tip of injector nozzle come in contact with other parts.
 Tighten mounting bolts in two steps in numerical order as
shown in the figure.
5. Connect fuel injector harness.
6. Install intake manifold collector. Refer to EM-28, "
Exploded View".
7. Connect quick connector between fuel feed hose and fuel tube connection with the following procedure:
a. Check no foreign substances are deposited in and around fuel tube and quick connector, and no damage
on them.
b. Thinly apply new engine oil around fuel tube from tip end to spool end.Fuel tube side : Black
Nozzle side : Green
2 : O-ring (black)
4 : O-ring (green)
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: Engine front
1st step: 10.1 N·m (1.0 kg-m, 7 ft-lb)
2nd step: 22.0 N·m (2.2 kg-m, 16 ft-lb)
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EM-48
< ON-VEHICLE REPAIR >
FUEL INJECTOR AND FUEL TUBE
c. Align center to insert quick connector straightly into fuel tube.
 Insert quick connector (1) to fuel tube until top spool (2) is
completely inside quick connector, and 2nd level spool (3)
exposes right below quick connector.
CAUTION:
 Hold (A) position as shown in the figure when inserting
fuel tube into quick connector.
 Carefully align center to avoid inclined insertion to pre-
vent damage to O-ring inside quick connector.
 Insert until you hear a “click” sound and actually feel the engagement.
 To avoid misidentification of engagement with a similar sound, be sure to perform the next step.
d. Pull quick connector by hand holding (A) position. Check it is
completely engaged (connected) so that it does not come out
from fuel tube (2).
e. Install quick connector cap (3) to quick connector.
 Install quick connector cap with arrow on surface facing in
direction of quick connector (fuel feed hose side).
CAUTION:
If quick connector cap cannot be installed smoothly, quick
connector may have not been installed correctly. Check connection again.
f. Secure fuel feed hose to clamp of quick connector cap.
8. Install in the reverse order of removal after this step.
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INSPECTION AFTER INSTALLATION
Check on Fuel Leakage
1. Turn ignition switch “ON” (with the engine stopped). With fuel pressure applied to fuel piping, check there
are no fuel leakage at connection points.
NOTE:
Use mirrors for checking at points out of clear sight.
2. Start the engine. With engine speed increased, check again that there are no fuel leakage at connection
points.
CAUTION:
Never touch the engine immediately after stopped, as the engine becomes extremely hot.
B : Fitted condition
: Upright insertion
1 : Fuel feed hose
B : Upper view
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IGNITION COIL, SPARK PLUG AND ROCKER COVER
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1. Apply liquid gasket to the position shown in the figure with the
following procedure:
Use Genuine Liquid Gasket or equivalent.
a. Refer to figure (E) to apply liquid gasket to joint part of camshaft
bracket (No. 1) (1) and cylinder head.
b. Refer to figure (H) to apply liquid gasket in 90 degrees to figure.
2. Install rocker cover gasket to rocker cover.
3. Install rocker cover.
 Check if rocker cover gasket is not dropped from the installation groove of rocker cover.
4. Tighten bolts in two steps separately in numerical order as
shown in the figure.
5. Install in the reverse order of removal after this step.
A : Liquid gasket application point
F: View F
b: 4 mm (0.16 in)
c: φ2.5 - 3.5 mm (0.098 - 0.138 in)
d: 5 mm (0.20 in)
g : 10 mm (0.39 in)
I : End surface of camshaft bracket (No. 1)
: Engine front
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: Engine front
1st step: 1.96 N·m (0.2 kg-m, 17 in-lb)
2nd step: 8.33 N·m (0.85 kg-m, 74 in-lb)
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EM-54
< ON-VEHICLE REPAIR >
TIMING CHAIN
b. Check that intake and exhaust cam noses on No. 1 cylinder
(engine front side of bank 1) are located as shown in the figure.
 If not, turn crankshaft one revolution (360 degrees) and align
as shown in the figure.
10. Remove crankshaft pulley as follows:
a. Fix crankshaft with the pulley holder (commercial service tool)
(A).
b. Loosen crankshaft pulley bolt and locate bolt seating surface at
10 mm (0.39 in) from its original position.
CAUTION:
Never remove crankshaft pulley bolt as it will be used as a
supporting point for suitable puller.
c. Place suitable puller tab on holes of crankshaft pulley, and pull
crankshaft pulley through.
CAUTION:
Never put suitable puller tab on crankshaft pulley periphery,
as this will damage internal damper.
11. Remove front timing chain case as follows:
a. Loosen mounting bolts in reverse order as shown in the figure.
: Engine front
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1 : Crankshaft pulley
PBIC3961E
SEM915E
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