KYMCO Grand Dink 250 Service Manual page 26

1
. 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 a
CDI unit tester
Check ignition coil
with a CDI unit tester
Symptom
Weak or no spark
Not loose
Good
Normal
Normal
Normal
Abnormal
closed
Good spark
ÅFaulty spark plug
Loose ÅFaulty spark plug
Good ÅPoorly connected coupler
Abnormal
ÅFaulty ignition switch
ÇFaulty exciter coil
Abnormal
ÉFaulty pulser coil
ÑFaulty ignition coil
ÅBroken wire harness
ÇPoorly connected coupler
Abnormal ÅFaulty CDI unit
ÅFaulty ignition coil
GRAND DINK 250
Probable Cause
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