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Engine Overheating - Kawasaki KLX110 Service Manual

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Table of Contents
Troubleshooting Guide
Compression low:
Spark plug loose
Cylinder head not sufficiently tightened
down
No valve clearance
Cylinder, piston worn
Piston ring bad (worn, weak, broken or
sticking)
Piston ring/groove clearance excessive
Cylinder head gasket damaged
Cylinder head warped
Cylinder gasket damaged
Valve spring broken or weak
Valve not seating properly (valve bent, de-
formed, worn or carbon accumulation on
the seating surface)
Decompression trouble
Other:
Igniter trouble
Engine oil level too high
Engine oil viscosity too high
Brake dragging
Drive train trouble

Engine overheating

Clutch slipping
Poor Running or No Power at High
Speed:
Firing incorrect:
Spark plug dirty, broken or gap maladjusted
Spark plug cap or ignition coil lead trouble
Spark plug cap shorted or not in good con-
tact
Spark plug incorrect
Igniter trouble
Crankshaft sensor trouble
Rotor damaged
Ignition coil trouble
Wiring connector not in good contact
Fuel/air mixture incorrect:
Choke valve closed
Main jet clogged or wrong size
Jet needle or needle jet worn
Air jet clogged
Fuel level in carburetor float bowl too high
or too low
Needle Jet or air passage clogged
Air cleaner clogged, poorly sealed or miss-
ing
Air cleaner duct loose
Water or foreign matter in fuel
Carburetor holder loose
Fuel tank cap air vent obstructed
Fuel tap clogged
Fuel line clogged
Compression low:
Spark plug loose
Cylinder head not sufficiently tightened
down
No valve clearance
Cylinder, piston worn
Piston ring bad (worn, weak, broken or
sticking)
Piston ring/groove clearance excessive
Cylinder head gasket damaged
Cylinder head warped
Cylinder gasket damaged
Valve spring broken or weak
Valve not seating properly (valve bent, de-
formed, worn or carbon accumulation on
the seating surface.)
Decompression trouble
Knocking:
Carbon built up in combustion chamber
Fuel poor quality or incorrect
Spark plug incorrect
Igniter trouble
Other:
Throttle valve won't fully open
Brake dragging
Air cleaner clogged
Water or foreign matter in fuel
Clutch slipping
Overheating
Engine oil level too high
Engine oil viscosity too high
Drive chain trouble
Crankshaft bearing worn or damaged
Engine Overheating:
Firing incorrect:
Spark plug dirty, broken or maladjusted
Spark plug incorrect
Igniter trouble
Fuel/air mixture incorrect:
Main jet clogged or wrong size
Fuel level in carburetor float bowl too low
Carburetor holder loose
Air cleaner clogged, poorly sealed or miss-
ing
Air cleaner duct loose
Choke valve closed
Compression high:
Carbon built up in combustion chamber
Engine load faulty:
Clutch slipping
Engine oil level too high
Engine oil viscosity too high
Brake dragging
Drive chain trouble
Lubrication inadequate:
Engine oil level too low
Engine oil poor quality or incorrect
APPENDIX 16-11

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