Hyundai Sonata 1991 Shop Manual page 44

VALVE CLEARANCE ADJUSTMENT
GENERAL
Y20CEOA
As the intake and exhaust valves are equipped with auto-lash
adjustment mechanisms, there is no need for valve clearance
adjustment. The proper functioning of the auto-lash mechanism
may be determined by checking for valve noise. When there is
valve noise or any unusual noise, check the auto-lash by
removing it.
1. Using special tool (09221-32001), first loosen slightly and
then tighten to specified torque.
Tightening torque
Cylinder head bolts
Cold [At engine temperature is approximately 20°C
(68°F)] .
88-98 Nm (900-1,000 kg.cm, 65-72 Ib.ft)
Hot [At engine temperature is approximately 80°C
(176°F)] .
98-108 Nm (1,000-1,100 kg.cm, 72-80 Ib.ft)
TIGHTENING CYLINDER HEAD BOLTS
Y20CFOA "-
09221-32001
2. Be sure to follow the specific torquing sequence as shown
in illusration.
NOTE
Run the engine until normal operating temperature is
reached, allow it to cool down, and then retorque bolts
to specification for best results.
¢
Front of engine
0 0 0
0
~
8 6 1
3
jj
~
4 2 5
0 0 0
20YOO2
CHECKING ENGINE OIL
Y20CGOA
1. Position vehicle on a flat level.
2. Warm up the engine and stop the engine.
NOTE
In the case of a vehicle that has been out of service for
a prolonged period, run the engine for serveral minutes
and stop for some time before attempting to check oil
level.
MAX
MIN
20Y003
20-13