Suzuki RM125 - TROUBLESHOOTING (no Spark or Poor Spark)

ELECTRICAL SYSTEM 13-5
TROUBLESHOOTING (No spark or poor spark)
Step 1
1) Check the ignition system couplers for poor connections.
Is there connection in the ignition system couplers?
Step 2
1) Measure the peak voltage of ignition coil. (13-6)
Is the peak voltage OK?
Step 3
1) Inspect the spark plug. (2-6)
Is the spark plug OK?
Step 4
1) Measure the ignition coil resistanace. (13-7)
Is the ignition coil resistanace OK?
Step 5
1) Measure the pick-up coil peak voltage. (13-6)
Is the peak voltage OK?
Step 6
1) Measure the pick-up coil resistance. (13-7)
Is the resistance OK?
Step 7
1) Measure the exciter coil and charge coil peak voltages. (13-6)
Are the peak voltages OK?
YES Go to Step 2.
NO Poor connection of couplers
YES Go to Step 3.
NO Go to Step 4.
YES • Poor connection of the spark plug
• Go to Step 4.
NO Faulty spark plug
YES Go to Step 5.
NO Faulty ignition coil
YES Go to Step 7.
NO Go to Step 6.
YES Go to Step 7.
NO
• Faulty pick-up coil
• Metal particles or foreign material being stuck on the pick-up coil and rotor tip
YES • Faulty CDI
• Faulty wire harness
• Faulty engine stop switch
NO Go to Step 8.