First Post! I've got a 2005 Phoenix that had blown the back out of the CDI. I replaced the CDI with a new one and it started right up. When I tried to ride it and opened up the throttle the CDI blew out again! Before I blow another $150 CDI i thought I'd run this past you guys to see if it might be something else causing it to blow... Rectifier? Thanks a lot !

 

Might have the stator checked out as the cdi gets its input from it.Charging on different part of the stator,but could be shorting out,plus do a resistance check on the reg/rectifier also.If you can't find the specs,rule of thumb on reg/rectifier is on all yellow wires between each other should show about the same resistance,plus none should be shorted to ground. OPT

 

I had a phoenix do the same thing, rectifier was bad. Replaced and all has been good