No spark!

jato33 · Post by **jato33** » Wed Jul 30, 2008 8:35 pm

I have a 1987 Spree, with no spark. I have checked the connections, and they all seem fine. From the service manual I have decided that is either the CDI or the alternator. I do not know how to test the CDI, so should I just replace it and see if the problem goes away? Or does anyone know how to test the CDI? Does anyone know what the CDI even does?

justinnielsen01 · Post by **justinnielsen01** » Wed Jul 30, 2008 11:20 pm

i have a working alternator and fly wheel for 45 shipped or just alternator with out fly wheel for 25 shipped

and i have and ingiton coil on ebay for 15 shipped

mousewheels · Post by **mousewheels** » Thu Jul 31, 2008 12:34 am

>> From the service manual I have decided that is either the CDI or the alternator. I do not know how to test the CDI, so should I just replace it and see if the problem goes away? Or does anyone know how to test the CDI? Does anyone know what the CDI even does?

The service manual has some checks for the CDI, alternator and coil. If you can run the tests, it could help you isolate the problem.

The CDI accumulates the charge from the spark exciter coil in your stator. There is a trigger coil also on your stator which connects to the CDI. From the trigger coil pulse, There can be components to adjust spark advance vs rpm. At the correct point in time, the capacitor energy is dumped to the primary of the external spark coil.

Kenny_McCormic · Post by **Kenny_McCormic** » Thu Jul 31, 2008 1:31 am

The multimeter, use it.

Is to coil getting power? if yes coil is blown
Is the cdi getting power? if yes its the CDI, no its the alternator.

maddog · Post by **maddog** » Thu Jul 31, 2008 11:42 pm

Its called a stator then the coil, the cdi will outlast the life of the scoot.