Question about Motorcycles
Coil is good. Battery is good. Suspect CDI box, but everything I read or hear about CDI box is when there is no spark at all. This thing only seems to spark after you stop turning the motor over.
Hi mate the cdi if failed you would have no spark period. I strongly recommend re checking stator when spark comes in and out or dies when hot or will only jump start these are all classic stator issues. simple test just need multimeter and read OHMS from the connecting plug of the stator... one of the pairs of wires will read sky high or zero... I don't know exact reading for your model but kwaka will tell you but a dodgy stator will generally read zero on one or more of the pairs of wires cheers mate hope it helps
Posted on Oct 26, 2012
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Posted on Jan 02, 2017
SOURCE: no spark 110cc engine wont start
Check the fuses. Next, check for spark but with a new spark plug. How good is the battery? If needed, add water to the battery cells enough to cover the top of the cell plates.Try a jump start from your car battery. Is the kill switch on? Check the operation of the ignition switch with a volt ohmmeter. You should be getting power into and out of the ignition switch.
If the bike doesn't start and run properly check the side stand kill switch. It kills the engine so that you don’t start out with the side stand down. Broken or out of adjustment, it would kill the spark. Check for a broken wire at the switch or coupler. Get a service manual and check out the electrical section. Some bikes have a diode integrated into the turn signal relay. Try moving the kill switch by hand. If that doesn’t work then wire a jumper around the switch to bypass it. If that doesn’t work, check out the relay.
Check the wiring harness. Did a wire come unplugged? Are all wires clean and with solid connections? Any abraded or pinched wires? Is the bike in neutral and the neutral light is lit up? If no neutral light, check the neutral switch and neutral switch wire on center casing.
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Posted on May 28, 2009
Hi and welcome to FixYa,
The voltage on the green wire must be pulsating when cranking/starting the bike, not steady. Confirm by similarly testing the voltage on the black wire on the left ignition coil. If the green still reads a constant voltage, then the CDI is faulty; to be more specific, most likely that the switching tansistor inside the CDI that drives the right ignition coil has shorted.
Good luck and thank you for asking FixYa.
Posted on Jul 10, 2009
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