1998 TOYOTA LAND CRUISER Spark plug torque

A05561
RH Cylinder Head CoverSpark Plug
LH Cylinder Head
Cover
Gasket
RH Intake Camshaft
RH Exhaust Camshaft Bearing Cap
Bearing CapOil Feed
Pipe
Camshaft Sub Gear Engine Hanger
Heated Oxygen Sensor
(Bank 1 Sensor 1) Connector
RH Cylinder
Head Gasket Engine Wire Bracket
7.5 (77, 66 in.´lbf)
16 (160,12)
Heated Oxygen Sensor
(Bank 2 Sensor 1)
Connector RH Cylinder Head and
Exhaust Manifold AssemblyCamshaft
Housing
Plug Snap Ring
Wave WasherBearing Cap
Oil Seal
Oil Seal

Non-reusable part
N´m (kgf´cm, ft´lbf) : Specified torque
See page EM-59
1st 32 (326, 24)
2nd Turn 90°
3rd Turn 90°
Semi-Circular
Plug Camshaft Sub GearCamshaft Gear Spring
Spark Plug
Tube Gasket
Gasket
LH Intake
Camshaft
LH Exhaust
Camshaft
Camshaft Gear SpringSnap Ring
Wave Washer
Camshaft Housing Plug
Semi-Circular Plug
Engine Wire
Bracket
Engine
Hanger

LH Cylinder
Head Gasket

O-Ring
Oil Dipstick and Guide
for Engine
LH Cylinder Head and
Exhaust Manifold
Assembly
Engine Wire
Protector
7.5 (77, 66 in.´lbf)
- ENGINE MECHANICALCYLINDER HEAD
EM-33
1606 Author
: Date
:
2004 LAND CRUISER (RM1071U)

IG08R-01
B04085
IG-6
- IGNITIONIGNITION COIL
1809 Author
: Date
:
2004 LAND CRUISER (RM1071U)
REMOVAL
1. REMOVE V-BANK COVER
2. REMOVE INTAKE AIR CONNECTOR
3. DISCONNECT ENGINE WIRE FROM LH CYLINDER
HEAD COVER
Disconnect the 2 wire clamps and engine wire.
4. DISCONNECT IGNITION COIL (WITH IGNITER) CON-
NECTORS
5. REMOVE IGNITION COILS (WITH IGNITER) FROM
SPARK PLUGS
Remove the bolt, and pull out the ignition coil (with igniter). Re-
move the 8 ignition coils (with igniter).
Torque: 7.5 N´m (80 kgf´cm, 66 in.´lbf)

CHECK POWER SUPPLY TO IGNITION COIL (WITH
SENSOR (See step 3)
SPARK TEST
Replace the crankshaft position sensor.
CHECK RESISTANCE OF CAMSHAFT POSITION
1. Turn ignition switch to ON.
2. Check that there is battery voltage at ignition coil positive (+)
terminal.
CHECK CONNECTION OF IGNITION COIL
CONNECTOR
Resistance:Cold Hot
CHECK RESISTANCE OF CRANKSHAFT POSITION
Resistance:Cold Hot 1,630 - 2,740 W2,065 - 3.225 W
CHECK IGT SIGNAL FROM ECM
(See page DI-202)
REPAIR WIRING BETWEEN IGNITION COIL
AND ECM
Replace the camshaft position sensor. Connect securely.
Check wiring between ignition switch
to ignition coil (with igniter).
Check ECM (See page IN-36)
NO
OK
OK
OK
OKBAD
BAD
BAD
BAD
BAD
SENSOR (See step 4) IGNITER) CHANGE IT TO NORMAL IGNITION COIL (WITH
IGNITER) AND PERFORM SPARK TEST AGAIN
OKReplace the ignition coil (with igniter).
NO
OK
985 - 1,600 W1,265 - 1,890 W
IG-2
- IGNITIONIGNITION SYSTEM
1805 Author
: Date
:
2004 LAND CRUISER (RM1071U)
If the spark does not occur, do the test as follows:
(7) Using a 16 mm plug wrench, install the spark plugs.
Torque: 17.5 N´m (180 kgf´cm, 13 ft´lbf)
(8) Reinstall the ignition coils (with igniter) (See page
IG-6).
2. INSPECT SPARK PLUGS
NOTICE:

Never use a wire brush for cleaning.

Never attempt to adjust the electrode gap on used
spark plug.

Spark plug should be replaced every 100,000 km
(60,000 miles).
(a) Remove the ignition coils (with igniter) (See page
IG-6).

IG0152
B03199
Ohmmeter
B02713
Ohmmeter IG-4
- IGNITIONIGNITION SYSTEM
1807 Author
: Date
:
2004 LAND CRUISER (RM1071U)
(f) Clean the spark plugs.
If the electrode has traces of wet carbon, allow it to dry and then
clean with a spark plug cleaner.
Air pressure: Below 588 kPa (6 kgf/cm
2, 85 psi)
Duration: 20 seconds or less
HINT:
If there are traces of oil, remove it with gasoline before using the
spark plug cleaner.
(g) Using a 16 mm plug wrench, install the spark plugs.
Torque: 17.5 N´m (180 kgf´cm, 13 ft´lbf)
(h) Reinstall the ignition coils (with igniter) (See page
IG-6).
3. INSPECT CAMSHAFT POSITION SENSOR
(a) Remove the V-bank cover.
(b) Disconnect the camshaft position sensor connector.
(c) Using an ohmmeter, measure the resistance between ter-
minals.
Resistance:
Cold835 - 1,400 W
Hot1,060 - 1,645 W
If the resistance is not as specified, replace the camshaft posi-
tion sensor.
(d) Reconnect the camshaft position sensor connector.
(e) Reinstall the V-bank cover.
4. INSPECT CRANKSHAFT POSITION SENSOR
(a) Remove the crankshaft position sensor (See page
IG-12).
(b) Using an ohmmeter, measure the resistance between the
terminals.
Resistance:
Cold1,630 - 2,740 W
Hot2,065 - 3,225 W
If the resistance is not as specified, replace the crankshaft posi-
tion sensor.
(c) Reinstall the crankshaft position sensor.

PP1AM-01
- PREPARATIONIGNITION
PP-21
80 Author
: Date
:
2004 LAND CRUISER (RM1071U)
EQUIPMENT
Megger (Insulation resistance meter)Spark plug
Spark plug cleaner
Torque wrench

SS0O7-01
SS-18
- SERVICE SPECIFICATIONSIGNITION
158 Author
: Date
:
2004 LAND CRUISER (RM1071U)
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
Spark plug x Cylinder head17.518013
Ignition coil (with igniter) x Cylinder head cover7.58066 in.´lbf
Camshaft position sensor x LH cylinder head7.58066 in.´lbf
Crankshaft position sensor x Oil pump6.56558 in.´lbf