Service Manual (KLZ1000C) — page 756 of 762
Appendix › Troubleshooting Guide
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18-58 APPENDIX
Troubleshooting Guide
Compression low: Valve not seating properly (valve bent,
Spark plug loose worn, or carbon accumulation on the
Cylinder head not sufficiently tightened seating surface.)
down Knocking:
No valve clearance Carbon built up in combustion chamber
Cylinder, piston worn Fuel poor quality or incorrect
Piston ring bad (worn, weak, broken, or Spark plug incorrect
sticking) ECU trouble
Piston ring/groove clearance excessive Miscellaneous:
Cylinder head gasket damaged Throttle valve won’t fully open
Cylinder head warped Brake dragging
Valve spring broken or weak Clutch slipping
Valve not seating properly (valve bent, Engine overheating
worn, or carbon accumulation on the Engine oil level too high
seating surface) Engine oil viscosity too high
Camshaft cam worn Drive train trouble
Other: Camshaft cam worn
ECU trouble Air suction valve trouble
Engine oil viscosity too high Air switching valve trouble
Drive train trouble Catalytic converter melt down due to muffler
Brake dragging overheating (KLEEN)
Clutch slipping
Engine overheating Overheating:
Air suction valve trouble Firing incorrect:
Air switching valve trouble Spark plug dirty, broken, or maladjusted
Spark plug incorrect
Poor Running or No Power at High ECU trouble
Speed: Muffler overheating:
Firing incorrect: For KLEEN, do not run the engine even if
Spark plug dirty, broken, or maladjusted with only one cylinder misfiring or poor
Spark plug incorrect running (Request the nearest service fa-
Stick coil shorted or not in good contact cility to correct it)
trouble For KLEEN, do not push-start with a dead
Stick coil trouble battery (Connect another full-charged
ECU trouble battery with jumper cables, and start the
Fuel/air mixture incorrect: engine using the electric starter)
Air cleaner clogged, poorly sealed, or miss- For KLEEN, do not start the engine under
ing misfire due to spark plug fouling or poor
Air cleaner housing holder loose connection of the stick coil
Water or foreign matter in fuel For KLEEN, do not coast the motorcycle
Throttle body assy holder loose with the ignition switch off (Turn the igni-
Fuel to injector insufficient tion switch on and run the engine)
Fuel tank air vent obstructed ECU trouble
Fuel line clogged Fuel/air mixture incorrect:
Fuel pump trouble Throttle body assy holder loose
Compression low: Air cleaner housing holder loose
Spark plug loose Air cleaner poorly sealed, or missing
Cylinder head not sufficiently tightened Air cleaner clogged
down Compression high:
No valve clearance Carbon built up in combustion chamber
Cylinder, piston worn Engine load faulty:
Piston ring bad (worn, weak, broken, or Clutch slipping
sticking) Engine oil level too high
Piston ring/groove clearance excessive Engine oil viscosity too high
Cylinder head gasket damaged Drive train trouble
Cylinder head warped Brake dragging
Valve spring broken or weak