Ceebl

Attitude Druid? Iv checked the loom tnyt and checked anything else I can think of with a multimeter, I wouldn't ask again if I hadn't already exhausted the options.
Basically if I earth the plug and short it myself to the battery I am getting a spark when I break the connection with a wire, there is continuity among the whole loom including across the coil and in the lead from the coil to the cdi unit. Basically I believe it is either another cdi unit has mysteriously blown or there is a problem has coincidentally occured in the timing system that controls the cdi unit.
Therefore my current problem is does anyone kno how to test a cdi unit?