KYMCO VITALITY 50 Manual page 46

2
. GENERAL INFORMATION
NO SPARK AT SPARK PLUG
Inspection/Adjustment
Replace with a new
spark plug and inspect
again
Check spark plug cap
and high-tension wire
for looseness
Check CDI unit coupler
for looseness
Measure resistance
between terminals of
CDI unit coupler
Check related parts
Check CDI unit with
the CDI unit tester
Check ignition coil
with the CDI unit tester
2-41
Symptom
Good spark Weak or no spark
Loose
Normal
Normal
Normal
Normal
Normal
Probable Cause
Faulty spark plug
Not loose
Loose spark plug cap
Abnormal Poorly connected coupler
Abnormal
Faulty ignition switch
Weak battery
Abnormal
Faulty pulser coil
Faulty ignition coil
Faulty charging system
Broken wire harness
Poorly connected coupler
Abnormal
VITALITY 50
Faulty CDI unit