Clinician
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Post by ukscooterboi on Jul 4, 2013 13:42:56 GMT -6
The readings look good as far as I can see. I can`t see from your first post if you`ve replaced the ignition coil/lead/cap. Also have you got a good earth between frame and engine ? I haven't replaced it but here is the results for it: the 2 nipples green and black coil the results are: 00.4 OHMS. Red lead on the green nipple and black on where the coil screws in = 00.3 OHMS. Red lead on the green nipple and black on cap = 00.8 OHMS. At 20M OHMS |
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Clinician
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Post by ukscooterboi on Jul 4, 2013 6:54:27 GMT -6
here is my results:
hello,
Basically my scooter 125cc 4t hasn't got spark and i seen your guide and here is my results:
Next you must check the blue trigger wire that comes from the sensor magnet on top of the flywheel. It sends a small burst of energy to the CDI via the blue/yellow wire in the four plug and initiates a spark to the coil. The manuals say you need .05vAC or above to initiate the spark.
I am getting .149vAC
You should see 50 to 100vAC when you crank the motor over, here we are getting a little more than 100vAC which is fine:
I am getting 100vAC
Next you must check the blue trigger wire that comes from the sensor magnet on top of the flywheel. It sends a small burst of energy to the CDI via the blue/yellow wire in the four plug and initiates a spark to the coil. The manuals say you need .05vAC or above to initiate the spark.
I am getting .149vAC
To check your ignition switch and make sure the kill function is operating correctly, ground your multimeter and put the red lead against the black/white wire that runs to the CDI. Set your key to OFF, make sure the killswitch is set to RUN, and test for continuity, you should get a tone indicating the circuit is open which would ground out the kill wire and stop the engine; this is normal:
With key OFF i am getting .7/8ohms With key ON it cut the ohms.
Your meter should read .1 to 1 Ohm for the primary circuit, and 7 to 9 kOhms on the secondary. If you do not get these values your coil is bad and must be replaced. Due to the inexpensive nature of GY6 coils (around $10) some choose to keep a spare handy to swap out for testing purposes. I personally diagnosed my last running problem by putting in a spare coil.
Coil Primary: 00.4 ohms
Coil Secondary: 8.18/19 kohms
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Clinician
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Joined: Jul 3, 2013 7:05:39 GMT -6
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Post by ukscooterboi on Jul 3, 2013 9:54:35 GMT -6
Hi guys,
As you seen the tittle i have no spark on my 125cc 4t scooter and i have been trying to research online on how to get the spark back.
New Solenoid
New Spark
New Battery
New CDI
I can only start my moped on electric button as i haven't got a kickstart.
I have cleaned the pick up coil and tried again and no spark.
I gone out and got myself a multimeter and here is the results.
[ Gray & Yellow tripy black wires into spark plug coil = 11.50 at 2M ohm ]
[ Gray and white wire = 5.36 at 2K ohm ]
[ Gray and yellow wire = 1.073 at 2M ohm ]
[ White and yellow wire = 1.500 at 20M ohm ]
[ Red and black & white wire = 80.00 at 200M V ]
I need help guys!! Please
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