Engine - Suzuki LT-R450K6 Instruction Manual

9-4
SERVICING INFORMATION
ENGINE
Remedy
Adjust.
Repair or replace.
Adjust.
Replace.
Replace.
See electrical section.
Retighten.
Replace.
Clean.
Clean and dry.
Replace.
Replace.
Replace.
Repair or replace.
Clean or replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Check and repair.
Adjust.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
Replace.
complaint
Engine will not start
or i s hard to start.
Symptom and possible causes
.-
----
Compression too low
1. Valve clearance out of adjustment
2. Worn valve guides or poor seating of valves
3. Mistirning valves
4. Excessively worn piston rings
5. Worn-down cylinder bore
6. Too slowly starter motor cranks
7.
Poor seating of spark plug
8. Broken, cracked or damaged piston
Plug not sparking
1. Fouled spark plug
2. Wet spark plug
3. Defective ignition coil
4. Defective CKP sensor
5. Defective ECM
6. Open-circuited wiring connections
No fuel reaching the intake manifold
1.
Clogged fuel filter or fuel hose
2. Defective fuel pump
3. Defective fuel pressure regulator
4.
Defective fuel injector
5 . Defective fuel pump relay
6. Defective ECM
7. Open-circuited wiring connections
Incorrect fuellair mlxture
1. TP sensor out of adjustment
2. Defective fuel pump
3. Defective fuel pressure regulator
4. Defective TP sensor
5. Defective CKP sensor
6. Defective IAP sensor
7. Defective ECM
8. Defective ECT sensor
9. Defective IAT sensor