Toyota FJ Cruiser (GSJ 10, 15 series). Instruction — part 142
EM–2
1GR-FE ENGINE MECHANICAL – ENGINE
EM
(3) Pull out the wire harness shown in the
illustration.
(4) Connect the tester probe of a timing light to the
wire of the ignition coil connector for the No. 1
cylinder.
NOTICE:
•
Use timing light that detects the first
signal.
•
After checking, wrap the wire harness
with tape.
(5) Inspect the ignition timing during idling.
Ignition timing:
8 to 12
°CA BTDC during idling
(Transmission in neutral position)
(6) Remove SST from the DLC3.
(7) Inspect the ignition timing during idling.
Ignition timing:
7 to 24
°CA BTDC during idling
(Transmission in neutral position)
(8) Install the air cleaner.
8.
INSPECT ENGINE IDLING SPEED
NOTICE:
•
Turn all the electrical systems OFF.
•
Operate the inspection when the cooling fan
motor is turned OFF.
(a) Warm up the engine.
(b) When using the intelligent tester:
(1) Connect the intelligent tester to the DLC3.
(2) Select the following menu items: DIAGNOSIS /
ENHANCED OBD ll / DATA LIST / PRIMARY /
ENGINE SPD.
(3) Inspect the engine idling speed.
Idling speed:
650 to 750 rpm (Transmission in neutral
position)
(c) When not using the intelligent tester:
(1) Using SST, connect the terminal 8 (TAC) of the
DLC3.
SST
09843-18030
(2) Race the engine speed at 2,500 rpm for
approximately 90 seconds.
(3) Inspect the engine idling speed.
Idling speed:
650 to 750 rpm (Transmission in neutral
position)
A076315E02
A076316E01
Intelligent Tester
DLC3
CAN VIM
A129958E01
1 2 3 4 5 6
9 1011 1213141516
7 8
TAC
DLC3
A118802E02
1GR-FE ENGINE MECHANICAL – ENGINE
EM–3
EM
9.
INSPECT COMPRESSION
(a) Warm up and stop the engine.
(b) Remove the circuit opening relay (See page
).
(c) Remove the V-bank cover (See page
).
(d) Remove the air cleaner assembly (See page
).
(e) Remove the throttle body bracket (See page
(f)
Remove the oil baffle plate (See page
(g) Remove the No. 1 surge tank stay (See page
(h) Remove the No. 2 surge tank stay (See page
(i)
Remove the ignition coils (See page
(j)
Remove the spark plugs.
(k) Inspect the cylinder compression pressure.
(1) Insert a compression gauge into the spark plug
hole. (*1)
SST
09992-00500
(2) Fully open the throttle. (*2)
(3) While cranking the engine, measure the
compression pressure. (*3)
Compression pressure:
1,300 kPa (13.3 kgf/cm
2
, 189 psi)
Minimum pressure:
1,000 kPa (10.2 kgf/cm
2
, 145 psi)
Difference between cylinders:
100 kPa (1.0 kgf/cm
2
, 15 psi)
NOTICE:
•
Use a fully-charged battery so the engine
speed can be increased to 2,500 rpm or
more.
•
Inspect the other cylinders in the same
way.
•
Measure the compression in as short a
time as possible.
(4) If the cylinder compression is low, pour a small
amount of engine oil into the cylinder through
the spark plug hole and repeat steps (*1)
through (*3) for cylinders with low compression.
•
If adding oil increases the compression, the
piston rings and/or cylinder bore may be
worn or damaged.
•
If the pressure stays low, a valve may be
stuck or seated improperly, or there may be
leakage from the gasket.
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.
A076317E01
EM–4
1GR-FE ENGINE MECHANICAL – ENGINE
EM
(d) Immediately check the CO/HC concentration during
idling and/or while running at 2,500 rpm.
HINT:
•
Complete the measurement within 3 minutes.
•
When carrying out the 2 mode (with the engine
idling/running at 2,500 rpm) test, the
measurement orders are prescribed by the
applicable local regulations.
(e) If the CO/HC concentration does not comply with
regulations, troubleshoot in the order given below.
(1) Check the heated oxygen sensor operation.
CO
HC
Problems
Causes
Normal
High
Rough idling
1.
Faulty ignition:
–
Incorrect timing
–
Fouled, shorted or improperly gapped plugs
2.
Incorrect valve clearance
3.
Leaking intake and exhaust valves
4.
Leaking cylinders
Low
High
Rough idling
(Fluctuating HC reading)
1.
Vacuum leaks:
–
PCV hoses
–
Intake manifold
–
Throttle body
–
IAC valve
–
Brake booster line
2.
Lean mixture causing misfire
High
High
Rough idling
(Black smoke from
exhaust)
1.
Restricted air filter
2.
Plugged PCV valve
3.
Faulty EFI systems:
–
Faulty pressure regulator
–
Faulty engine coolant temperature sensor
–
Faulty mass air flow meter
–
Faulty ECM
–
Faulty injectors
–
Faulty throttle position sensor
1GR-FE ENGINE MECHANICAL – DRIVE BELT
EM–5
EM
ENGINE
1GR-FE ENGINE MECHANICAL
DRIVE BELT
COMPONENTS
FAN AND GENERATOR
V BELT
NO. 1 ENGINE UNDER
COVER SUB-ASSEMBLY
N*m (kgf*cm, ft*lbf) : Specified torque
29 (296, 21)
x4
A126409E01
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