Troubleshooting - KYMCO X-Town 300 ABS Service Manual

1. GENERAL INFORMATION

TROUBLESHOOTING

ENGINE WILL NOT START OR IS HARD TO START
1. Check for operation of the fuel pump
Normal
2. Inspect the fuel flow
Normal
3. Inspect the fuel injector
Normal
4. Perform spark test
Good spark
5. Test cylinder compression
Compression normal
6. Starting following normal procedure
Engine does not start
7. Remove and inspect spark plug
Abnormal
Abnormal
Abnormal
Weak or no spark
Low compression
Engine start
but stops
Wet plug
X-Town300 ABS
Possible cause
 Faulty fuel pump
 Faulty pressure regulator
 Faulty injector
 Faulty spark plug
 Fouled spark plug
 Faulty ECU
 Broken or shorted spark plug wire
 Faulty ignition switch
 Faulty ignition pulse generator
 Loose or disconnected spark plug
wire
 Valve stuck open
 Worn cylinder and piston ring
 Damaged cylinder head gasket
 Seized valve
 Improper valve timing
 Intake pipe leaking
 Improper ignition timing (Faulty
ignition coil or ignition pulse
generator)
 Fuel contaminated
 Throttle valve open
 Clogged air cleaner
1-16