KYMCO 2006 MXU 500 Off-Road Owner's Manual page 223

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 ignition unit
coupler for looseness
Measure resistance
between terminals of
ignition unit coupler
Check related parts
Check ignition unit
with a ignition unit
tester
Check ignition coil with
a ignition unit tester
Symptom
Weak or no spark
Not loose
Good
Normal
Normal
Normal
Abnormal
Good spark
Faulty spark plug
Loose Loose spark plug cap
Good 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
Faulty ignition unit
Abnormal
Faulty change gear control
unit
Faulty ignition coil
MXU 500
Probable Cause
1-40