adding oil TOYOTA SUPRA 1986 Service Repair Manual

wIf adding oil helps the compression, it is likely that the
piston rings and/or cylinder bore are probably worn or
damaged.
wIf pressure stays low, a valve may be sticking or seating
improper, or there may be leakage past the gasket.
8. REINSTALL SPARK PLUGS
9. 2JZ±GE:
RECONNECT HIGH±TENSION CORDS TO SPARK
PLUGS
(See high±tension cords and cord clamps installation in
Ignition System)
10. 2JZ±GTE:
REINSTALL IGNITION COILS ASSEMBLIES
(See ignition coils installation in Ignition System)
11. 2JZ±GE:
RECONNECT DISTRIBUTOR CONNECTOR
12. 2JZ±GTE:
RECONNECT CAMSHAFT POSITION SENSOR CONNEC-
TORS EG±10
± ENGINEENGINE MECHANICAL

(i) Measure the Plastigage at its widest point.
Standard oil clearance:
STD
.035±0.053 mm (0.0014±0.0021 in.)
U/S 0.25
.040±0.078 mm (0.0016±0.0031 in.)
Maximum oil clearance.
STD
.08 mm (0.0031 in.)
U/S 0.25
.09 mm (0.0035 in.)
If the oil clearance is greater than maximum, replace the
bearings. If necessary, grind or replace the crankshaft.
HINT: If using a standard bearing, replace with one having
the same number. If the number of the bearing cannot be de-
termined, select the correct bearing by adding together the
numbers imprinted on the connecting rod cap and crank-
shaft, then selecting the bearing with the same number as the
total. There are 5 sizes of standard bearings, marked º1º, º2º,
º3º, º4º and º5º accordingly.
  Number mark
 Connecting rod cap 1 2 3 
 Crankshaft
 

0
 
 1
 

2
 
 0
 
 1
 

2
 
 0
 

1
 
 2
 Use bearing 1 2 3 2 3 4 3 4 5
EXAMPLE: Connecting rod cap º3º +Crankshaft º1º = Total
number 4 (Use bearing º4º)
Reference:
Connecting rod big end inside diameter:
Mark º1º
55.025±55.031 mm (2.1663±2.1666 in.)
Mark º2º
55.031±55.037 mm (2.1666±2.1668 in.)
Mark º3º
55.037±55.043 mm (2.1668±2.1670 in.)
Crankshaft crank pin diameter:
Mark º0º
51.994±52.000 mm (2.0470±2.0472 in.)
Mark º1º
51.988±51.994 mm (2.0468±2.0470 in.)
Mark º2º
51.982±51.988 mm (2.0465±2.0468 in.)
± ENGINEENGINE MECHANICALEG±101