Hello all, 
  
Today on the way to work my CEL came on so i stopped by Schucks on the way home.  The codes where 303 and 304, which are miss fires in the #3 and #4 cylenders.  About a month ago i replaced the plugs and wires. Does any one have any suggestions on what else i should do or look for???? 
I did have the #4 cyl. miss fire on me 7 or 8 months ago. 
1996 OB 2.5 w/165K 
  
Thanks