ignition problem citreon ax 1 ltr petrol 96?

Hi All,

My citreon ax wont start. electronic ignition, I pulled a plug to look for a spark, could not see one, but with one plug out It started?? I put the plug back in, and got ignition :)

following day same thing.. pulled the sparkplug it started ??

today I drained the battery trying to start it, refusing to pull the sparkplug, as it made no sence to me..

please help???

what shoud i test and how?? thanks in advance