agility city 125 Workshop-manual : Page 27

          1. GENERAL INFORMATION                                              AGILITY CITY 125


 NO SPARK AT SPARK PLUG

 Inspection/Adjustment                      Symptom                     Probable Cause

 Replace with a new
 spark plug and inspect
 again

                            Weak or no spark           Good spark      Faulty old spark plug

 Check spark plug cap
 and high-tension wire
 for looseness

                                Not loose                Loose         Loose spark plug cap


 Check CDI unit coupler
 for looseness


                                  Good                   Good          Poorly connected coupler

 Measure resistance
 between CDI unit
 coupler wire terminals


                                 Normal                Abnormal


 Check related parts


                                                                       Faulty ignition switch
                                 Normal                Abnormal        Faulty pulser coil
                                                                       Faulty ignition coil

                                                                       Broken wire harness
                                                                       Poorly connected coupler

 Check CDI unit with a
 CDI unit tester


                                 Normal                Abnormal        Faulty CDI unit

 Check ignition coil with
 a CDI unit tester

                                            Abnormal                   Faulty ignition coil



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