Suzuki GSX-R1000 Service Manual page 406

SERVICING INFORMATION 10·7
Complaint Symptom and possible causes Remedy
Engine runs poorly Defective engine internal/electrical parts
in high speed range.
1. Weakened valve springs.
Replace.
2. Worn camshafts. Replace.
3. Valve timing out of adjustment. Adjust.
4. Too narrow spark plug gaps. Adjust.
5. Ignition not advanced sufficiently due to poorly
Replace ECM.
working timing advance circuit.
6. Defective ignition coils. Replace.
7. Defective CKP sensor. Replace.
8. Defective ECM. Replace.
9. Clogged air cleaner element. Clean.
10. Clogged fuel hose, resulting in inadequate fuel
Clean and prime.
supply to injector.
11. Defective fuel pump. Replace.
12. Defective TP sensor. Replace.
13. Defective STP sensor or STV actuator Replace.
Defective air flow system
1. Clogged air cleaner element. Clean or replace.
2. Defective throttle valve. Adjust or replace.
3. Defective secoundary throttle valve. Adjust or replace.
4. Sucking air from throttle body joint. Repair or replace.
5. Defective ECM. Replace.
6. Imbalancing throttle valve synchronization. Adjust.
Defective control circuit or sensor
1. Low fuel pressure.
Repair or replace.
2. Defective TP sensor.
Replace.
3. Defective IAT sensor.
Replace.
4. Defective CMP sensor.
Replace.
5. Defective CKP sensor.
Replace.
6. Defective GP sensor. Replace.
7. Defective lAP sensor. Replace.
8. Defective ECM. Replace.
9. Out of adjustment TP sensor.
Replace.
10. Defective STP sensor and/or STV actuator. Replace.