Download  Print this page

Advertisement

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 warped
Cylinder head gasket damaged
Valve spring broken or weak
Valve not seating properly (valve bent,
worn, or carbon accumulation on the
seating surface)
Other:
Ie
igniter trouble
Carburetor not synchronizing
Carburetor vacuum piston doesn't slide
smoothly
Carburetor vacuum piston diaphragm dam·
age
Engine oil viscosity too high
Drive train trouble
Brake dragging
Air suction valve trouble
Vacuum switch valve trouble
Engine overheating
Clutch slipping
Poor Running or No Power at High
Speed:
Firing incorrect:
Spark plug dirty, broken, or maladjusted
Spark plug cap shorted or coil wiring trouble
Spark plug cap or high tension coil not in
good contact
Spark plug incorrect
Ie
igniter trouble
Crankshaft sensor trouble
Ignition coil trouble
Fuel/air mixture incorrect:
Starter plunger stuck open
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
Bleed holes of needle jet holder or needle
jet clogged
Air cleaner element clogged, poorly sealed,
or missing
Air cleaner duct loose
Air cleaner O-ring damaged
Water or foreign matter in fuel
Carburetor holder loose
Fuel to carburetor insufficient
APPENDIX 15-7
Fuel tank 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
Valve spring broken or weak
Valve not seating property (valve bent,
worn, or carbon accumulation on the
seating surface.)
Knocking:
Carbon built up in combustion chamber
Fuel poor quality or incorrect
Spark plug incorrect
IC igniter trouble
Miscellaneous:
Throttle valve won't fully open
Carburetor vacuum piston doesn't slide
smoothly
Carburetor vacuum piston diaphragm dam-
aged
Brake dragging
Clutch slipping
Overheating
Engine oil level too high
Engine oil viscosity too high
Drive train trouble
Air suction valve trouble
Vacuum switch valve trouble
Overheating:
Firing incorrect:
Spark plug dirty, broken, or maladjusted
Spark plug incorrect
IC 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 duct loose
Air cleaner element poorly sealed, or miss·
ing
Air cleaner O-ring damaged
Air cleaner clogged
Compression high:
Carbon built up in combustion chamber
Engine load faulty:
Clutch slipping
Engine oil level too high

Advertisement

Table of Contents

   Also See for Kawasaki ZR-7S

Comments to this Manuals

Symbols: 0
Latest comments: