KYMCO CK 1 Manual page 22

1
. GENERAL INFORMATION
NO SPARK AT SPARK PLUG
Inspection/Adjustment
Replace with a new
spark plug and inspect
again
Check spark plug cap
and ignition coil wire
for looseness
Check CDI unit coupler
for looseness
Measure resistance
between CDI unit
coupler wire terminals
Check related parts
Check CDI unit with a
CDI unit tester
Check ignition coil
with a CDI unit tester
1-21
Symptom
Weak or no spark
Not loose
Normal
Normal
Normal
Normal
Abnormal
Good spark Faulty old spark plug
Loose spark plug cap
Loose
Abnormal
Poorly connected coupler
Abnormal
Faulty ignition switch
Faulty exciter coil
Abnormal
Faulty pulser coil
Faulty ignition coil
Broken wire harness
Poorly connected coupler
Abnormal
Faulty CDI unit
Faulty ignition coil
Probable Cause
CK 1