
SERVICING INFORMATION 10-5
Complaint
Symptom and possible causes
Remedy
Engine runs poorly
in high speed range.
Defective engine internal/electrical parts
1. Weakened valve springs
2. Worn camshaft
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
13. Defective STP sensor or STVA
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. Defective STP sensor or STVA
Defective control circuit or sensor
1. Low fuel pressure
2. Defective TP sensor
3. Defective IAT sensor
4. Defective CKP sensor
5. Defective IAP sensor
6. Defective ECM
7. TP sensor out of adjustment
8. Defective STP sensor and/or STVA
Replace.
Replace.
Adjust.
Adjust.
Replace ECM.
Replace.
Replace.
Replace.
Clean.
Clean and prime.
Replace.
Replace.
Replace.
Replace.
Adjust or replace.
Adjust or replace.
Retighten or replace.
Replace.
Replace.
Repair or replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Содержание TU250X
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