Low Compression Or Uneven Compression; High Compression; Excessive Noise; Contaminated Engine Oil Or Coolant - Honda CX650C 1983 Shop Manual

HONDA
CYLINDER H-JEAD/VALVE
CX65OC
Unit: mm (in)
/
ITEM
/
STANDARD
/
SERVICE LIMIT
I
Valves and
valve guides
Stem O.D.
Guide I.D.
Stem-to-guide
clearance
7 .l - 1.3 (0.04 - 0.05)
1
2.0 (0.08)
Cylinder head
/
0.10 (0.040)
TORQUE VALUES
I-lead cover bolt
Cylinder head bolt
Front engine mount bolt (10 mm)
(12 mm)
Front engine hanger nut
Valve adjuster lock nut
TOOLS
Special
Valve guide driver attachment
Valve guide reamer, 6.6 mm
Valve guide driver,
6.6
mm
Common
Valve spring compressor
8 - 12 N.m (0.8 - 1.2 kg-m, 6
-
9 ft-lb)
50 - 60 N.m (5.0 - 6.0 kg-m, 36
-
43 ft-lb)
45 - 70 N.m (4.5 - 7.0 kg-m, 33
-
51 ft-lb)
60 - 80 N.m (6.0 - 8.0 [<gem, 43 - 58 ft-lb)
30 - 40 N.m (3.0 - 4.0 kg-m, 22 - 29 ft-lb)
20
-
25.Nem(2.0 -
2.5
kg-m,
I 4 - 18 ft-lb)
TROUBLESHOOTING
Engine top-end problems are usually performance related which can be diagnosed by a compression test, or are noises which
can usually be traced to the top-end with a sounding rod or stethoscope.
Low Compression or Uneven Compression
m Valves
-
lncorrect valve clearance.
-
Burned or bent valves.
- Broken valve spring.
- lncorrect valve timing.
- Sticking valve.
*
Cylinder head
-- Leaking or damaged head gasket.
- Warped or cracked cylinder head.
*
Cylinder and piston (refer to Section 12)
High Compression
@
Excessive carbon build-up on piston crown or combustion
chamber.
Excessive Noise
*
lncorrect valve adjustment.
@
Sticking valve or broken valve spring.
Damaged rocker arm or camshaft.
@
Bent push rod.
Contaminated Engine
Oil or
Coolant
Leaking head gasket.
Date of Issue: December,
1982
G3 WONDA MOTOR CO., LTD.