Suzuki DL1000 - Engine Lacks Power

SERVICING INFORMATION 8-7
Complaint Symptom and possible causes Remedy
Engine runs poorly in
high speed range.
Defective air flow system
1. Clogged air cleaner element.
2. Defective throttle valve.
3. Defective secondary throttle valve.
4. Sucking air from throttle body joint.
5. Defective ECM.
6. Imbalanced throttle valve synchronization.
Defective control circuit or sensor
1. Low fuel pressure.
2. Defective throttle position sensor.
3. Defective intake air temp. sensor.
4. Defective camshaft position sensor.
5. Defective crankshaft position sensor.
6. Defective gear position switch.
7. Defective intake air pressure sensor.
8. Defective atmospheric pressure sensor.
9. Defective ECM.
10. Throttle position sensor out of adjustment.
11. Defective secondary throttle position sensor and/or
secondary throttle valve actuator.
Clean or replace.
Adjust or replace.
Adjust or replace.
Repair or replace.
Replace.
Adjust.
Repair or replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Adjust.
Replace.
Engine lacks power. Defective engine internal/electrical parts
1. Loss of tappet clearance.
2. Weakened valve springs.
3. Valve timing out of adjustment.
4. Worn piston rings or cylinders.
5. Poor seating of valves.
6. Fouled spark plug.
7. Incorrect spark plug.
8. Clogged injector.
9. Throttle position sensor out of adjustment.
10. Clogged air cleaner element.
11. Imbalanced throttle valve synchronization.
12. Sucking air from throttle valve or vacuum hose.
13. Too much engine oil.
14. Defective fuel pump or ECM.
15. Defective crankshaft position sensor and ignition coil.
Defective control circuit or sensor
1. Low fuel pressure.
2. Defective throttle position sensor.
3. Defective intake air temp. sensor.
4. Defective camshaft position sensor.
5. Defective crankshaft position sensor.
6. Defective gear position switch.
7. Defective intake air pressure sensor.
8. Defective atmospheric pressure sensor.
9. Defective ECM.
10. Imbalanced throttle valve synchronization.
11. Throttle position sensor out of adjustment.
12. Defective secondary throttle position sensor and/or
secondary throttle valve actuator.
Adjust.
Replace.
Adjust.
Replace.
Repair.
Clean or replace.
Adjust or replace.
Clean.
Adjust.
Clean.
Adjust.
Retighten or replace.
Drain out excess oil.
Replace.
Replace.
Repair or replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Adjust.
Adjust.
Replace.