Suzuki 2005 DL650K5, Service Manual, Page: 413 / 701

SERVICING INFORMATION 9-9
ENGINE OVERHEATS
DIRTY OR HEAVY EXHAUST SMOKE
SLIPPING CLUTCH
DRAGGING CLUTCH
TRANSMISSION WILL NOT SHIFT
Symptom, possible causes and remedy
1) Defective engine internal parts
• Heavy carbon deposit on piston crowns.
• Not enough oil in the engine.
• Defective oil pump or clogged oil circuit.
• Sucking air from intake pipes.
• Use incorrect engine oil.
• Defective cooling system.
Symptom, possible causes and remedy
2) Lean fuel/air mixture
• Short-circuited IAP sensor/lead wire.
• Short-circuited IAT sensor/lead wire.
• Sucking air from intake pipe joint.
• Defective fuel injectors.
• Defective ECT sensor.
Symptom, possible causes and remedy
3) The other factors
• Ignition timing too advanced due to defective timing
advance system (ECT sensor, GP switch, CKP
sensor and ECM.)
• Drive chain is too tight.
Clean.
Add oil.
Replace or clean.
Retighten or replace.
Change.
See radiator section.
Repair or replace.
Repair or replace.
Repair or replace.
Replace.
Replace.
Replace.
Adjust.
Symptom, possible causes and remedy
• Too much engine oil in the engine.
• Worn piston rings or cylinders.
• Worn valve guides.
• Scored or scuffed cylinder walls.
• Worn valves stems.
• Defective stem seal.
• Worn oil ring side rails. Check with inspection window. Drain excess oil.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Symptom, possible causes and remedy
• Weakened clutch springs.
• Worn or distorted pressure plates.
• Distorted clutch plates or pressure plates. Replace.
Replace.
Replace.
Symptom, possible causes and remedy
• Some clutch springs weakened while others are
not.
• Distorted pressure plates or clutch plates.
Replace.
Replace.
Symptom, possible causes and remedy
• Broken gearshift cam.
• Distorted gearshift forks.
• Worn gearshift pawl. Replace.
Replace.
Replace.
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