(a) Remove the air cleaner filter element sub-assembly.
(b) Visually check that there is no dirt, blockage, and/or
damage to the air cleaner filter element.
HINT:
•If there is any dirt or a blockage in the air cleaner
filter element, clean it with compressed air.
•If any dirt or a blockage remains even after
cleaning the air cleaner filter element with
compressed air, replace it.
EM–1
EM
DLC3
Intelligent Tester
CAN VIM
C110200E02
6.INSPECT VALVE LASH ADJUSTER NOISE
(a) Rev up the engine several times. Check that the
engine does not emit unusual noises.
If unusual noises occur, warm up the engine and
idle it for over 30 minutes. Then repeat this
procedure.
HINT:
If any defects or problems are found during the
inspection above, perform lash adjuster inspection
(See page EM-87).
7.INSPECT IGNITION TIMING
(a) Warm up the engine.
(b) When using the intelligent tester:
Check the ignition timing.
(1) Connect the intelligent tester to the DLC3.
(2) Enter DATA LIST mode with the intelligent
tester.
Ignition timing:
8 to 12° BTDC at idle
HINT:
Refer to the intelligent tester operator's manual
for help when selecting the DATA LIST.
EM–2
DLC3
CG
1
2345678
910111213141516
TC
2GR-FE ENGINE MECHANICAL – ENGINE
(c) When not using the intelligent tester:
Check the ignition timing.
(1) Using SST, connect terminals 13 (TC) and 4
(CG) of the DLC3.
SST09843-18040
NOTICE:
•Confirm the terminal numbers before
connecting them. Connection with a
wrong terminal can damage the engine.
A122830E14
•Turn off all electrical systems before
connecting the terminals.
•Perform this inspection after the cooling
fan motor is turned off.
(2) Remove the V-bank cover.
EM
Tester Terminal
Red Lead
Wire
A129620E01
(3) Pull out the red lead wire harness.
(4) Connect the tester terminal of the timing light to
the red lead wire as shown in the illustration.
NOTICE:
Use a timing light which can detect the first
signal.
(5) Check the ignition timing at idle.
Ignition timing:
8 to 12° BTDC at idle
NOTICE:
When checking the ignition timing, the
transmission should be in neutral.
HINT:
Run the engine at 1,000 to 1,300 rpm for 5
seconds, and then check that the engine rpm
returns to idle speed.
(6) Disconnect terminals 13 (TC) and 4 (CG) of the
DLC3.
(7) Check the ignition timing at idle.
Ignition timing:
12 to 22° BTDC at idle
(8) Confirm that the ignition timing moves to the
advanced angle side when the engine rpm is
increased.
(9) Remove the timing light.
DLC3
Intelligent Tester
CAN VIM
C110200E02
8.INSPECT ENGINE IDLE SPEED
(a) Warm up the engine.
(b) When using the intelligent tester:
Check the idle speed.
(1) Connect the intelligent tester to the DLC3.
(2) Enter DATA LIST mode with the intelligent
tester.
Idle speed:
600 to 700 rpm
NOTICE:
•When checking the idle speed, the
transmission should be in neutral.
•Check the idle speed with the cooling fan
off.
TAC
DLC3
1
2345678
910111213141516
2GR-FE ENGINE MECHANICAL – ENGINE
•Switch off all accessories and air
conditioning before connecting the
intelligent tester.
HINT:
Refer to the intelligent tester operator's manual
for further details.
(c) When not using the intelligent tester:
Check the idle speed.
(1) Using SST, connect the tachometer test probe
to terminal 9 (TAC) of the DLC3.
SST09843-18030
(2) Check the idle speed.
Idle speed:
600 to 700 rpm
EM–3
A122830E15
A129621
9.INSPECT COMPRESSION
(a) Warm up and stop the engine.
(b) Disconnect the injector connectors.
(c) Remove the intake air surge tank (See page FU-
13).
(d) Remove the 6 ignition coils.
(e) Remove the 6 spark plugs.
(f)Check the cylinder compression pressure.
(1) Insert a compression gauge into the spark plug
hole.
(2) While cranking the engine, measure the
compression pressure.
Compression pressure:
1.4 MPa (14 kgf/cm
2
, 199 psi)
Minimum pressure:
2
0.98 MPa (10 kgf/cm
, 142 psi)
Difference between each cylinder:
2
0.1 MPa (1.0 kgf/cm
, 15 psi)
NOTICE:
•Always use a fully charged battery to
obtain an engine speed of 250 rpm or
more.
•Check the other cylinders' compression
pressure in the same way.
•This measurement must be done as
quickly as possible.
(3) If the cylinder compression is low, pour a small
amount of engine oil into the cylinder through
the spark plug hole and inspect again.
HINT:
•If adding oil increases the compression, the
piston rings and/or cylinder bore may be
worn or damaged.
•If pressure stays low, a valve may be stuck
or seated improperly, or there may be
leakage in the gasket.
(g) Install the 6 spark plugs.
Torque: 18 N*m (184 kgf*cm, 13 ft.*lbf)
EM
EM
EM–4
2GR-FE ENGINE MECHANICAL – ENGINE
(h) Install the 6 ignition coils.
Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf)
(i)Install the intake air surge tank. (See page FU-17).
10. INSPECT CO/HC
(a) Start the engine.
(b) Run the engine at 2,500 rpm for approximately 180
seconds.
(c) Insert the CO/HC meter testing probe at least 40 cm
(1.3 ft) into the tailpipe during idling.
(d) Check CO/HC concentration at idle and/or 2,500
rpm.
HINT:
Check regulations and restrictions in your area
when performing 2 mode CO/HC concentration
testing (engine check at both idle speed and at
2,500 rpm).
If the CO/HC concentration does not comply with
regulations, perform troubleshooting in the order
given below.
(1) Check A/F sensor and heated oxygen sensor
operation.
(2) See the table below for possible causes, and
then inspect and repair.
COHCProblemsCauses
1. Faulty ignitions:
– Incorrect timing
NormalHighRough idle
LowHigh
HighHigh
Rough idle
(fluctuating HC reading)
Rough idle
(black smoke from exhaust)
– Fouled, shorted or improperly g apped plugs
2. Incorrect valve clearance
3. Leaks in intake and exhaust valves
4. Leaks in cylinders
1. Vacuum leaks:
– PCV hoses
– Intake manifold
– Throttle body
– Brake booster line
3.REMOVE V-BANK COVER SUB-ASSEMBLY (See
page EM-23)
4.REMOVE V-RIBBED BELT
(a) Using SST, release the belt tension by turning the
belt tensioner counterclockwise, and remove the Vribbed belt from the belt tensioner.
SST09249-63010
SST
A129622E01
A095070
(b) While turning the belt tensioner counterclockwise,
align with its holes, and then insert the 5 mm bihexagon wrench into the holes to fix the V-ribbed
belt tensioner.
2GR-FE ENGINE MECHANICAL – DRIVE BELT
EM–7
REPLACE
CORRECTINCORRECT
A131418E01
INSPECTION
1.INSPECT V-RIBBED BELT
(a) Visually check the V-ribbed belt for excessive wear,
frayed cords, etc.
If any defect has been found, replace the V-ribbed
belt.
HINT:
Cracks on the rib side of a V-ribbed belt are
considered acceptable.
If the drive belt has chunks missing from its ribs, it
should be replaced.
HINT:
•A "new belt" is a belt which has been used for
less than 5 minutes with the engine running.
•A "used belt" is a belt which has been used for 5
minutes or more with the engine running.
2.INSPECT V-RIBBED BELT TENSIONER ASSEMBLY
(a) Check that nothing gets caught in the tensioner by
turning it clockwise and counterclockwise.
If a malfunction exitsts, replace the tensioner.
INSTALLATION
EM
Water Pump
Vane Pump
Idler
Crankshaft
Generator
Idler
Tensioner
A/C Compressor
SST
A129622E01
A129623E01
1.INSTALL V-RIBBED BELT
(a) Install the V-ribbed belt.
(b) Using SST, turn the belt tensioner counterclockwise
and remove the bar.
SST09249-63010
(c) If it is difficult to install the V-ribbed belt, perform the
following procedure:
(1) Put the V-rib bed belt on every pulley except the
tensioner pulley as shown in the illustration.
(2) While releasing the belt tension by turning the
belt tensioner counterclockwise, put the Vribbed belt on the tensioner pulley.
NOTICE:
•Put the backside of the V-ribbed belt on
the tensioner pulley and idler pulley.
•Check that the V-ribbed belt is properly
set to each pulley.
(3) After installing the V-ribbed belt, check that it
fits properly in the ribbed grooves. Confirm that
the belt has not slipped out of the grooves on
the bottom of the crank pulley by hand.
EM
EM–8
2GR-FE ENGINE MECHANICAL – DRIVE BELT
2.INSTALL V-BANK COVER SUB-ASSEMBLY (See
page EM-52)