1. GENERAL INFORMATION                                                            K-XCT 125i


 TROUBLESHOOTING
 ENGINE WILL NOT START OR IS HARD TO START

                                                             Possible cause

1. Check for operation of the fuel pump     Abnormal        Faulty fuel pump

   Normal


2. Inspect the fuel flow                    Abnormal        Faulty pressure regulator


   Normal


3. Inspect the fuel injector                Abnormal        Faulty injector


   Normal


4. Perform spark test               Weak or no spark        Faulty spark plug
                                                            Fouled spark plug
                                                            Faulty ECU
   Good spark                                               Broken or shorted spark plug wire
                                                            Faulty ignition switch
                                                            Faulty ignition pulse generator
                                                            Loose or disconnected spark plug
                                                           wire

5. Test cylinder compression        Low compression         Valve stuck open
                                                            Worn cylinder and piston ring
                                                            Damaged cylinder head gasket
   Compression normal                                       Seized valve
                                                            Improper valve timing


6. Starting following normal procedure      Engine start    Intake pipe leaking
                                            but stops       Improper ignition timing (Faulty
                                                           ignition coil or ignition pulse
                                                           generator)
   Engine does not start                                    Fuel contaminated


7. Remove and inspect spark plug            Wet plug        Throttle valve open
                                                            Clogged air cleaner




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