1986 TOYOTA SUPRA fuel cap

09990±01000Engine Control Computer Check
Harness ªAº
RECOMMENDED TOOLS
09082±00050 TOYOTA Electrical Tester Set
09200±00010Engine Adjust Kit
09258±00030 Hose Plug SetPlug for vacuum hose, fuel
hose etc.
EQUIPMENT
 
 Carburetor cleaner
 
 
 
 Graduated cylinder 
 Injector
 
 
Soft brush 
 
 
 
Sound scope 
 
Injector
 Tachometer 
 
 Torque wrench
 
 
 
 Vacuum gauge 
 
COOLANT
 Item Capacity Classification 
 Engine coolant (w/ Heater) M/T
A/T 
 9.5 liters (10.0 US qts, 8.4 lmp. qts)
9.4 liters (9.9 US qts, 8.3 lmp. qts) 
 Ethylene±glycol base
± ENGINESFI SYSTEM (2JZ±GTE)EG±259

09843±18020 Diagnostic Check Wire
09990±01000Engine Control Computer Check
Harness ªAº
RECOMMENDED TOOLS
09082±00050 TOYOTA Electrical Tester Set
09200±00010Engine Adjust Kit
09258±00030 Hose Plug SetPlug for vacuum hose, fuel
hose etc.
EQUIPMENT
 Carburetor cleaner 
 
 Graduated cylinder 
 Injector
 Soft brush 
 Sound scope Injector
 Tachometer 
 Torque wrench 
 
 Vacuum gauge
 
 
COOLANT 
 Item
 
 Capacity
 
 Classification
 
 
Engine coolant (w/ Heater) M/T
A/T 
 
7.3 liters (7.7 US qts, 6.4 lmp. qts)
8.3 liters (8.8 US qts, 7.3 lmp. qts) 
 
Ethylene±glycol base
EG±188± ENGINESFI SYSTEMS (2JZ±GE)

Troubleshooting
If the CO/HC concentration does not comply with regulations,
troubleshoot in the order given below.
(a) Check (main heated) oxygen sensors operation.
(See oxygen sensor(s) inspection in SFI System)
(b) See the table below for possible causes, and then inspect
and correct the applicable causes if necessary.
 CO HC Phenomenon Causes
 
 
 
 
 
 
 
 
Normal 
 
 
 
 
 
 
 
High 
 
 
 
 
 
 
 
Rough idle 
 
 
 
 
 
 
 
1. Faulty ignitions:

Incorrect timing

Fouled, shorted or improperly gapped plugs

Open or crossed high±tension cords (2JZ±GE)

Cracked distributor cap (2JZ±GE)
2. Incorrect valve clearance
3. Leaky EGR valve
4. Leaky intake and exhaust valves
5. Leaky cylinder
 
 
 
 
 
 
 
 
Low 
 
 
 
 
 
 
 
High 
 
 
 
 
 
 
 
Rough idle
(Fluctuating HC reading) 
 
 
 
 
 
 
 
1. Vacuum leaks:

PCV hose

EGR valve

Intake manifold

Air intake chamber

Throttle body

IAC valve

Brake booster line
2. Lean mixture causing misfire
 
 
 
 
 
 
 
 
 
 
High 
 
 
 
 
 
 
 
 
 
High 
 
 
 
 
 
 
 
 
 
Rough idle
(Black smoke from exhaust) 
 
 
 
 
 
 
 
 
 
1. Restricted air filter
2. Faulty SFI systems:

Faulty fuel pressure regulator

Clogged fuel return line

Defective ECT switch

Defective turbo pressure sensor (2JZ±GTE)

Faulty ECM

Faulty injector

Faulty throttle position sensor

Faulty VAF meter (2JZ±GE)

Faulty MAF meter (2JZ±GTE)
EG±8± ENGINEENGINE MECHANICAL

12. REMOVE AIR INTAKE CHAMBER STAYS
(a) Remove the bolt, nut and No.1 stay.
(b) Remove the bolt, nut and No.2 stay.
13. REMOVE NO.2 VACUUM PIPE AND VSV ASSEMBLY
14. REMOVE NO.3 TIMING BELT COVER
(a) Remove the oil filler cap.
(b) Using a 5 mm hexagon wrench, remove the 6 bolts and timing
belt cover.
15. REMOVE CYLINDER HEAD REAR COVER
Using a 5 mm hexagon wrench, remove the 4 bolts and cylin-
der head rear cover.
16. D I S C O N N E C T H I G H ± T E N S I O N C O R D S F R O M
CYLINDER HEAD COVERS
(See step 4 in high±tension cords and cord clamps re-
moval in Ignition System)
17. REMOVE DISTRIBUTOR AND CORDS ASSEMBLY
(See steps 1 to 3 in distributor removal in Ignition Sys-
tem)
18. REMOVE SPARK PLUGS
19. RE MO V E TIMING BE LT FRO M CAMS HAFT TIMING
PULLEYS
(See steps 5 to 8 in timing belt removal)
NOTICE:
wSupport the timing belt, so that the meshing of the crank-
shaft timing pulley and timing belt does not shift.
wBe careful not to drop anything inside the timing belt cov-
er.
wDo not allow the timing belt to come into contact with oil,
water or dust.
20. REMOVE WATER BYPASS OUTLET AND NO.1 WATER
BYPASS PIPE
(See step 13 in water pump removal in Cooling System)
21. DISCONNECT FUEL RETURN HOSE
(a) Disconnect the fuel return hose from the fuel return pipe. Plug
the hose end.
(b) Disconnect the fuel return hose from the oil dipstick guide.
22. REMOVE ENGINE WIRE BRACET
Remove the bolt and bracket, disconnect the engine wire the
intake manifold stay. EG±42
± ENGINEENGINE MECHANICAL

(h) Disconnect the starter wire from the LH engine mounting
bracket.
(i) Remove the rubber cap and nut, and disconnect the starter
wire.
15. DISCONNECT FUEL HOSES
(a) Remove the union bolt and 2 gaskets, and disconnect the
fuel inlet hose.
HINT:
wPut a suitable container or shop rag under the fuel pipe
support.
wSlowly loosen the union bolt.
(b) Suspend the hose union end upward.
(c) Disconnect the fuel return hose from the clamp of the dipstick
guide.
(d) Disconnect the fuel return hose from the fuel return pipe. Plug
the hose end.
16. DISCONNECT PS PUMP WITHOUT DISCONNECTING
HOSES
(a) Disconnect these hoses:
(1) Air hose from throttle body
(2) Air hose from air intake chamber
(b) Remove the 2 bolts, and disconnect the pump housing from
the pump bracket.
HINT: Put aside the pump housing, and suspend it securely.
(c) Remove the 3 bolts and pump bracket.
± ENGINEENGINE MECHANICALEG±87

 
 
 
 
 
 
 
 
 
 
Crankshaft
(cont'd) 
 
 
 
 
 
 
 
 
 
Main bearing center wall thickness (Reference)
Mark 1
Mark 2
Mark 3
Mark 4
Mark 5
Crank pin diameter STD
U/S 0.25
Circle runout Maximum
Main journal taper and out±of±round Maximum
Crank pin taper and out±of±round Maximum 
 
 
 
 
 
 
 
 
 
1.994±1.997 mm (0.0785±0.0786 in.)
1.997±2.000 mm (0.0786±0.0787 in.)
2.000±2.003 mm (0.0787±0.0789 in.)
2.003±2.006 mm (0.0789±0.0790 in.)
2.006±2.009 mm (0.0790±0.0791 in.)
51.982±52.000 mm (2.0465±2.0472 in.)
51.745±51.755 mm (2.0372±2.0376 in.)
0.06 mm (0.0024 in.)
0.02 mm (0.0008 in.)
0.02 mm (0.0008 in.)
TORQUE SPECIFICATIONS
 Part tightened NVm kgfVcm ftVlbf
 Timing belt plate X Oil pump (2JZ±GTE) 7.8 80 69 in.Vlbf
 Idler pulley X Oil pump 34 350 25
 Crankshaft pulley X Crankshaft 324 3,300 239
 Camshaft timing pulley X Camshaft 79 810 59
Timing belt tensioner X Oil pump2627020 Drive belt tensioner X Cylinder head 21 210 15 Drive belt tensioner damper X Tensioner arm (2JZ±GTE M/T) 20 200 14 Drive belt tensioner damper X Tensioner bracket (2JZ±GTE M/T) 20 200 14 EGR cooler X Cylinder head 8.8 90 78 in.Vlbf ECT sensor X Cylinder head (2JZ±GE) 20 200 14 ECT sender gauge X Cylinder head (2JZ±GE) 20 200 14
 Engine hanger X Cylinder head 39 400 29
 Camshaft position sensor X Cylinder head (2JZ±GTE) 8.8 90 78 in.Vlbf
 
 
 
Cylinder head X Cylinder block 1st
2nd
3rd 



34
Turn 905
Turn 905 
 
 
350 
 
 
25
 Camshaft bearing cap X Cylinder head 20 200 14
 No.4 timing belt cover X Cylinder head 8.8 90 78 in.Vlbf
 Cylinder head cover X Cylinder head 2JZ±GE
2JZ±GTE 8.3
5.4 85
55 74 in.Vlbf
48 in.Vlbf
 
 Intake manifold X Cylinder head 2JZ±GE
2JZ±GTE 


27
27 
 280
280 
 20
20
 Fuel inlet pipe X Delivery pipe 42 420 30 Intake manifold stay X Intake manifold 39 400 29
 Intake manifold stay X Cylinder block 39 400 29
 Water outlet X Cylinder head (2JZ±GTE) 21 210 15
 Vacuum control valve set X Intake manifold (2JZ±GE) 21 210 15
 
 
Air intake chamber X Intake manifold 2JZ±GE
2JZ±GTE 


27
27 
 
280
280 
 
20
20
 Air intake chamber stay X Cylinder head (2JZ±GE) 18 185 13
 Air intake chamber stay X Air intake chamber (2JZ±GE) 18 185 13
 Exhaust manifold X Cylinder head 39 400 29
Pressure tank X Intake manifold (2JZ±GTE)2121015 
 Main bearing cap X Cylinder block 1st
2nd
 


44
Turn 905
 
 450
 
 33
EG±138± ENGINEENGINE MECHANICAL

 Connecting rod cap X Connecting rod 1st
2nd 29
Turn 905 300 22
 
Oil nozzle X Crankshaft (2JZ±GTE)
 
8.8
 
90
 
78 in.Vlbf Rear oil seal retainer X Cylinder block 5.9 60 52 in.Vlbf Crankshaft position sensor X Cylinder block (2JZ±GTE) 8.8 90 78 in.Vlbf Engine mounting bracket X Cylinder block 58 590 43 Engine coolant drain plug X Cylinder block 29 300 22 Union for oil cooler X Cylinder block (2JZ±GTE) 39 400 29
 Knock sensor X Cylinder block 44 450 33
 Oil pressure switch X Cylinder block 14 150 11
 Fuel pipe support X Cylinder block 14 145 10
 Oil filter bracket X Cylinder block 88 900 65
 No.2 water bypass pipe X Water pump 21 210 15
 No.2 water bypass pipe X Cylinder block 21 210 15
 Flywheel X Crankshaft (M/T) 1st
2nd 49
Turn 905 500 36
 Drive plate X Crankshaft (A/T) 83 850 61 Clutch cover X Flywheel (M/T) 19 195 14 
 Cylinder block X Transmission 14 mm head
17 mm head 
 39
72 
 400
730 
 29
43
 Clutch service hole cover X Clutch housing (2JZ±GTE M/T) 12 120 9
 Drive plate X Torque converter clutch (A/T) 33 340 25
 Oil cooler tube X Union for transmission (A/T) 34 350 25
 Rear support member X Body 25 260 19
 Rear support member X Engine rear mounting insulator 13 135 10
 Front suspension crossmember X Engine mounting insulator 59 600 43
 Transmission shift lever X Shift lever retainer (M/T) 19 195 14
 Transmission control rod X Shift lever (A/T) 13 130 9
Clutch release cylinder X Transmission (M/T)131309 
Clutch line tube X No.1 oil pan
 
37
 
380
 
27 Ground strap X Transmission (M/T) 37 380 27 Fuel inlet hose X Fuel pipe support 29 300 22 
 A/C compressor X Cylinder block for stud bolt
for bolt and nut 
 26
52 
 265
530 
 19
38
 PS pump front bracket X Cylinder block (2JZ±GE) 58 590 43
 PS pump front bracket X Oil pump (2JZ±GE) 52 530 38
 PS pump housing X PS pump bracket 58 590 43
 PS pump bracket X A/C compressor 58 590 43
 PS pump bracket X Cylinder block 39 400 29
 PS pump rear stay X PS pump bracket 39 400 29
 PS pump rear stay X Intake manifold stay (2JZ±GE) 39 400 29
 Rear center floor crossmember brace X Body (2JZ±GTE) 28 290 21
No.2 front exhaust pipe X Exhaust manifold6263046 No.2 front exhaust pipe X Front exhaust pipe 58 590 43 Pipe support bracket X Transmission 43 440 32 Front exhaust pipe X Center exhaust pipe 58 590 43 Center exhaust pipe X Tailpipe 19 195 14 
 
Sub heated oxygen sensor
x Front exhaust pipe (2JZ±GE (California), 2JZ±GTE) 
 
20 
 
200 
 
14
± ENGINEENGINE MECHANICALEG±139

EVAPORATIVE EMISSION (EVAP)
CONTROL SYSTEM
FUEL VAPOR LINES, FUEL TANK AND
TANK CAP INSPECTION
1. VISUALLY INSPECT LINES AND CONNECTIONS
Look for loose connections, sharp bends or damage.
2. VISUALLY INSPECT FUEL TANK
Look for deformation, cracks or fuel leakage.
3. VISUALLY INSPECT FUEL TANK CAP
Check if the cap and/or gasket are deformed or damaged.
If necessary, repair or replace the cap.
CHARCOAL CANISTER INSPECTION
1. REMOVE CHARCOAL CANISTER
2. VISUALLY INSPECT CHARCOAL CANISTER
Look for cracks or damage.
3. CHECK FOR CLOGGED FILTER AND STUCK CHECK
VA LV E
(a) Using low pressure compressed air (4.71 kPa (0.048
kgf/cm
2, 0.68 psi)), blow into port C and check that air flows
without resistance from the other ports. EG±178
± ENGINEEMISSION CONTROL SYSTEMS (2JZ±GTE)