1981 Suzuki gn400 I have 6 volts power coming out of my CDI to the ignition coil but then power drops off to the spark plug and won't create spark.. Brand new ignition coil and plug and ive ran new wires. Also cleaned all ground connections. I've even studied the wiring diagram and I'm stumped.. Plz help..
I know it sounds silly, but have you checked your earth or ground wiring. If not earthed this type of problem can occur. Did the bike run before you replaced your coil etc? You could have a crook CDI
are you using multi meter mate for correct voltage readings?
I did check over all grounds and cleaned surfaces. The bike ran well all summer until my buddy tipped it over.. Then I had no spark. I then replaced the coil and still nada
definately electrical matey, but where do you start. you say 6 volts coming out of the CDI is it constant voltage, perhaps the source could be the CDI unit itself, if you have all other stuff new.
Power from CDI isn't constant, it fluctuates as it should, but it hits the coil and drops off. There is some power but not enough. And it's flicking brand new, maybe I just send it back to suzuki with an angry letter demanding another coil
I'm thinking it might otherwise be my CDI. Which a friend of mine just so happens to have the same bike just down the road. Only difference might be the year. But I'm still hoping for more suggestions from y'all experts. I do appreciate any helpful comments.
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SOURCE: No spark
CHECK SAFETY SWITCHES KICK STAND IS NOTORIOUS FOR THIS AND MAKE SURE YORE CONNECTIONS AND FUSES ARE GOOD NEUTRAL SWITCH ALSO CAN AND DOES GO BAD AND THE CLUTCH SWITCH
SOURCE: 1996 zx11 getting sprk to one bank only
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.
SOURCE: wiring connection for cdi unit 1981 suzuki dr 400?
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