1997 TOYOTA SUPRA spark plug

P12646
Z16792
IAC Valve Pipe Clamp
PCV Valve Cruise
Control
Actuator
Cable
Bracket
No.2
No.1
P04466
A02174
- ENGINE MECHANICAL (2JZ-GTE)CYLINDER HEAD
EM-31
1136 Author
: Date
:
1997 SUPRA (RM502U)
14. REMOVE TIMING BELT FROM CAMSHAFT TIMING
PULLEYS (See page EM-15)
NOTICE:

Support the timing belt, so that the meshing of the
crankshaft timing pulley and timing belt does not
shift.

Be careful not to drop anything inside the timing belt
cover.

Do not allow the timing belt to come into contact with
oil, water or dust.
15. REMOVE IGNITION COILS ASSEMBLIES
(See page IG-6)
16. REMOVE SPARK PLUGS
17. REMOVE NO.1 AND NO.2 CYLINDER HEAD
COVERS
(a) Remove the 2 bolts, cruise control actuator cable bracket
and IAC valve pipe clamp.
(b) Remove the PCV valve.
(c) Remove the 6 bolts, 2 nuts, 8 seal washers and No.1 cyl-
inder head cover and gasket.
(d) Remove the 6 bolts, 2 nuts, 8 seal washers and No.2 cyl-
inder head cover and gasket.
18. REMOVE CAMSHAFT TIMING PULLEYS
Hold the hexagon portion of the camshaft with a wrench, and
remove the pulley mounting bolt and camshaft pulley.
19. REMOVE NO.4 TIMING BELT COVER
Remove the 4 bolts and timing belt cover.

IG04X-02
CHECK POWER SUPPLY TO IGNITION COIL AND
IGNITER
SPARK TEST
Replace camshaft position sensor.
CHECK RESISTANCE OF IGNITION COIL (See step 3)
1. Turn ignition switch to ON.
2. Check that there is battery positive voltage at ignition coil positive
CHECK CONNECTION OF IGNITION COIL AND IGNITER
Resistance: Cold Hot
Primary 0.68 - 0.98 W
CHECK RESISTANCE OF CAMSHAFT POSITION
Resistance:
ColdHot
835 - 1,400 W1,060 - 1,645 W
CHECK IGT SIGNAL FROM ECM
(See page DI-252)
TRY ANOTHER IGNITER
Replace ignition coil. Connect securely.
Check wiring between ignition switch
to ignition coil and igniter.
Check wiring between ECM and igniter,
and then try another ECM.
NO
OK
OK
OK
OKBAD
BAD
BAD
BAD
BAD
SENSOR (See step 4)0.54 - 0.84 W
(+) terminal.
CHECK RESISTANCE OF CRANKSHAFT POSITION
Resistance:Cold Hot
1,630 - 2,740 W2,065 - 3,225 W SENSOR (See step 5)
BADReplace crankshaft position sensor. OK
- IGNITION (2JZ-GTE)IGNITION SYSTEM
IG-1
1495 Author
: Date
:
1997 SUPRA (RM502U)
IGNITION SYSTEM
ON-VEHICLE INSPECTION
NOTICE:
ºColdº and ºHotº in these sentences express the tempera-
ture of the coils themselves. ºColdº is from -10°C (14°F) to
50°C (122°F) and ºHotº is from 50°C (122°F) to 100°C
(212°F).
1. INSPECT IGNITER AND SPARK TEST
Check that the spark occurs.
(1) Remove the ignition coil. (See page IG-6)
(2) Remove the spark plug.
(3) Install the spark plug to the ignition coil, and connect
the ignition coil connecter.
(4) Ground the spark plug.
(5) Check if spark occurs while engine is being
cranked.
NOTICE:
To prevent excess fuel being injected from the injectors
during this test, do not crank the engine for more than 5 -
10 seconds at a time.
If a spark does not occur, do the test as follows:

IG0147
Megger
Ground
N00917
Z00032
1.1mm IG-2
- IGNITION (2JZ-GTE)IGNITION SYSTEM
1496 Author
: Date
:
1997 SUPRA (RM502U)
2. INSPECT SPARK PLUGS
NOTICE:

Never use a wire brush for cleaning.

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

Spark plugs should be replaced every 100,000 km
(60,000 miles).
(a) Remove the ignition coils assemblies.
(See page IG-6)
(b) Inspect the electrode.
Using a megger (insulation resistance meter), measure
the insulation resistance.
Standard correct insulation resistance:
10 MW or more
If the resistance is less than specified, proceed to step (c).
HINT:
If a megger is not available, the following simple method of in-
spection provides fairly accurate results.
Simple Method:

Quickly race the engine 5 times to 4,000 rpm.

Remove the spark plug.

Visually check the spark plug.
If the electrode is dry ... OK
If the electrode is wet ... Proceed to step (d).

Reinstall the spark plug.
(c) Using a 16 mm plug wrench, remove the 6 spark plugs.
(d) Visually check the spark plug for thread damage and insu-
lator damage.
If abnormal, replace the spark plug.
Recommended spark plug:
DENSO madePK20R11
NGK madeBKR6EP11
(e) Inspect the electrode gap.
Maximum electrode gap for used spark plug:
1.3 mm (0.051 in.)
If the gap is greater than maximum, replace the spark plug.
Correct electrode gap for new spark plug:
1.1 mm (0.043 in.)
NOTICE:
If adjusting the gap of a new spark plug, bend only the base
of the ground electrode. Do not touch the tip. Never attempt
to adjust the gap on the used plug.

IG0152
P11795
Ohmmeter
P12177
Ohmmeter
- IGNITION (2JZ-GTE)IGNITION SYSTEM
IG-3
1497 Author
: Date
:
1997 SUPRA (RM502U)
(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, reinstall the 6 spark plugs.
Torque: 18 N´m (180 kgf´cm, 13 ft´lbf)
(h) Reinstall the ignition coils assemblies.
(See page IG-7)
3. INSPECT IGNITION COILS
(a) Remove the No.3 timing belt cover.
(b) Disconnect the ignition coil connectors.
(c) Using an ohmmeter, measure the resistance between the
terminals.
Primary coil resistance:
Cold0.54 - 0.84 W
Hot0.68 - 0.98 W
If the resistance is not as specified, replace the ignition coil.
(d) Reconnect the ignition coil connectors.
(e) Reinstall the No.3 timing belt cover.
4. INSPECT CAMSHAFT POSITION SENSORS
(a) Disconnect the camshaft position sensor connectors.
(b) 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.

MA0688
MA01G-01
- MAINTENANCEENGINE
MA-5
42 Author
: Date
:
1997 SUPRA (RM502U)
ENGINE
INSPECTION
1. REPLACE TIMING BELT
(2JZ-GE: See page EM-17)
(2JZ-GTE: See page EM-19)
2. INSPECT DRIVE BELT
(See page CH-2)
3. REPLACE SPARK PLUGS
(2JZ-GE: See page IG-1)
(2JZ-GTE: See page IG-1)
4. INSPECT AIR FILTER
(a) Remove the air filter.
(b) Visually check that the air filter is not excessively dam-
aged or oily.
If necessary, replace the air filter.
(c) Clean the filter with compressed air.
First blow from the inside thoroughly, then blow off the
outside of the filter.
(d) Reinstall the air filter and air cleaner case.
5. REPLACE AIR FILTER
Replace the air filter with a new one.
6. REPLACE ENGINE OIL AND OIL FILTER
(See page LU-4)
7. REPLACE ENGINE COOLANT
(See page CO-2)
8. INSPECT CHARCOAL CANISTER
(2JZ-GE: See page EC-5)
(2JZ-GTE: See page EC-5)
9. REPLACE GASKET IN FUEL TANK CAP
(2JZ-GE: See page EC-5)
(2JZ-GTE: See page EC-5)
10. INSPECT FUEL LINES AND CONNECTIONS
(2JZ-GE: See page SF-32)
(2JZ-GTE: See page SF-34)
11. INSPECT EXHAUST PIPES AND MOUNTINGS
Visually check the pipes, hangers and connections for severe
corrosion, leaks or damages.
12. ADJUST VALVE CLEARANCE
(2JZ-GE: See page EM-4)
(2JZ-GTE: See page EM-4)

SS0E2-02
- SERVICE SPECIFICATIONSIGNITION (2JZ-GTE)
SS-29
186 Author
: Date
:
1997 SUPRA (RM502U)
IGNITION (2JZ-GTE)
SERVICE DATA
Spark plugRecommended spark plugDENSO
NGK
Correct electrode gap for new plug
Maximum electrode gap for used plugPK20R11
BKR6EP11
1.1 mm (0.043 in.)
1.3 mm (0.051 in.)
Ignition coilPrimary coil resistance at cold
at hot0.54 - 0.84 W
0.68 - 0.98 W
Camshaft
position
sensorResistance at cold
at hot835 - 1,400 W
1,060 - 1,645 W
Crankshaft
position
sensorResistance at cold
at hot835 - 1,400 W
1,060 - 1,645 W

SS0E3-02
SS-30
- SERVICE SPECIFICATIONSIGNITION (2JZ-GTE)
187 Author
: Date
:
1997 SUPRA (RM502U)
TORQUE SPECIFICATION
Part tightenedN´mkgf´cmft´lbf
Spark plug x Cylinder head1818013
Ignition coil bracket x Cylinder head8.89078 in.´lbf
Camshaft position sensor x Cylinder head8.89078 in.´lbf
Engine hanger x Cylinder head3940029
Crankshaft position sensor x Oil pump8.89078 in.´lbf