Suzuki LT-R450K6 - Page 383

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