10-8 SERVICING INFORMATION
Complaint Symptom and possible causes Remedy
Engine lacks power. Defective engine internal/electrical parts
1. Loss of valve clearance
2. Weakened valve springs
3. Valve timing out of adjustment
4. Worn piston rings or cylinder
5. Poor seating of valves
6. Fouled spark plug
7. Incorrect spark plug
8. Clogged fuel injector
9. Clogged air cleaner elements
10. Sucking air from throttle body joint or intake pipe
11. Too much engine oil
12. Defective fuel pump or ECM
13. Defective CKP sensor or ignition coil
14. Slipping or worn drive belt
Defective control circuit or sensor
1. Low fuel pressure
2. Defective TP sensor
3. Defective CKP sensor
4. Defective IAP sensor
5. Defective ECM
Adjust.
Replace.
Adjust.
Replace.
Repair.
Clean or replace.
Adjust or replace.
Replace.
Clean or replace.
Retighten or replace.
Drain out excess oil.
Replace.
Replace.
Clean or replace.
Repair or replace.
Replace.
Replace.
Replace.
Replace.
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