no spark?!
 

so heres the deal i just bought my truck bout 6 months ago and its ran great...granted i blew a plug in it about a month or two ago got tht fixed and now im not gettin any spark..im gettin spark on the passanger side but not the driver i checked the coil and it was bad so i changed it out tried it and stil got nothing...do u guys have any ideas as to why it might not be getting spark?? any assitance would be appreciated