Suzuki LT-R450K6 - Page 381

SERVICING INFORMATION 9-5
Complaint
--
Engine idles poorly.
Engine stalls often.
Symptom and possible causes
1. Valve clearance out of adjustment
2. Poor seating of valves
3. Defective valve guides
4. Worn down camshafts
5. Too wide spark plug gap
6. Defective ignition coillplug cap
7. Defective CKP sensor
8. Defective ECM
9. Defective TP sensor
10. Defective fuel pump
11. Damaged or cracked vacuum hose
Incorrect
fuellalr mixture
1. Defective IAP sensor or circuit
2. Clogged fuel filter
3. Defective fuel pump
4. Defective fuel pressure regulator
5. Defective ECT sensor
6. Defective thermostat
7. Defective IAT sensor
8. Damaged or cracked vacuum hose
Fuel injector improperly operatlng
1. Defective fuel injectors
2. No injection signal from ECM
3. Open or short circuited wiring connection
4. Defective battery or low battery voltage
Control circuit or sensor Improperly operating
1. Defective ECM
2. Defective fuel pressure regulator
3. Defective TP sensor
4. Defective IAT sensor
5. Defective CKP sensor
6. Defective ECT sensor
7. Defective fuel pump relay
Englne internat parts improperly operating
1. Fouled spark plug
2. Defective CKP sensor or ECM
3. Clogged fuel hose
4. Out of adjustment tappet clearance
Remedy
Adjust.
Replace or repair.
Replace.
Replace.
Adjust or replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Repair or replace.
Clean or replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Repair or replace.
Repair or replace.
Replace or recharge.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Clean.
Replace.
Clean.
Adjust.