Suzuki DL1000 - Engine Overheating and Lean Fuel;Air Mixture

8-8 SERVICING INFORMATION
Complaint Symptom and possible causes Remedy
Engine overheats. Defective engine internal parts
1. Heavy carbon deposit on piston crowns.
2. Not enough oil in the engine.
3. Defective oil pump or clogged oil circuit.
4. Sucking air from intake pipes.
5. Use of incorrect engine oil.
6. Defective cooling system.
Lean fuel/air mixture
1. Short-circuited intake air pressure sensor/lead wire.
2. Short-circuited intake air temp. sensor/lead wire.
3. Sucking air from intake pipe joint.
4. Defective fuel injector.
5. Defective engine coolant temp. sensor.
The other factors
1. Ignition timing too advanced due to defective timing
advance system (engine coolant temp. sensor, gear
position switch, crankshaft position sensor and ECM.)
2. Drive chain 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.
Dirty or heavy
exhaust smoke.
1. Too much engine oil in the engine.
2. Worn piston rings or cylinders.
3. Worn valve guides.
4. Scored or scuffed cylinder walls.
5. Worn valves stems.
6. Defective stem seal.
7. Worn oil ring side rails.
Check with inspection window.
Drain excess oil.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Slipping clutch.
1. Weakened clutch springs.
2. Worn or distorted pressure plate.
3. Distorted clutch plates or clutch plate.
Replace.
Replace.
Replace.
Dragging clutch.
1. Some clutch spring weakened while others are not.
2. Distorted pressure plate or clutch plate.
Replace.
Replace.
Transmission will not
shift.
1. Broken gearshift cam.
2. Distorted gearshift forks.
3. Worn gearshift pawl.
Replace.
Replace.
Replace.
Transmission will not
shift back.
1. Broken return spring on shift shaft.
2. Rubbing or sticky shift shaft.
3. Distorted or worn gearshift forks.
Replace.
Repair or replace.
Replace.
Transmission jumps
out of gear.
1. Worn shifting gears on driveshaft or countershaft.
2. Distorted or worn gearshift forks.
3. Weakened stopper spring on gearshift stopper.
Replace.
Replace.
Replace.