I picked up a little Eton viper mini 50cc. I don't know much about them, it does turn over but I can't get a spark on it. I've changed oil and gas. Put new spark plug, ignition coil, cdi box, and stator. Still no spark. Any suggestions would be appreciated.

 

double check your quick connects in the wiring harness/loom as sometimes the blades can recess themselves and not make good contact. i presume your red slider kill switch is working correctly? you may need to use your ohm meter/voltmeter to check that out. also double check your wiring on your keyed ignition.

 

I checked the wire connections they all seem to have good contact. The slider kill does work. How would I test to see if the ignition switch is good?

 

with switch "ON", you shouldn't show any going to ground.