Honda CM 185T 1981 Manual page 57

CYLINDER HEAD/VALVES
TROUBLESHOOTING
Performance problems related to the cylinder head can usually be diagnosed by a compression test, or noise problems
which can be traced to the t o p end w i t h a sounding rod or stethoscope.
Low Compression or Uneven Compression (under 10 k g / c m
1. Valve troubles
Incorrect valve adjustment
Burned or bent valves
Incorrect valve timing
Sticking valve
Broken valve spring
Weak valve spring
Improper valve seating
2. Cylinder head troubles
Leaking or damaged head gasket
Warped or cracked cylinder head
Worn piston ring(s) and/or cylinder
Compression Too High (over 14 k g / c m 2 , 199 psi):
1. Excessive carbon deposits on the combustion chamber or piston
Excessive Noise:
1. Incorrect valve adjustment
2. Sticking valve or broken valve spring
3. Damaged rocker arm or camshaft
4. Worn or damaged camshaft sprocket
5. Slacken or worn cam chain
Date of Issue: December, 1977
© HONDA MOTOR CO., L T D .
2 , 142 psi):
6-3