How can I fix my Oldsmobil 1988 cutlass ceira 2.8 engine?

My car has been running very bad for a while know and for a while I had to use strater fluid in the air cleaner to get it going, and know it will not do that so I checked for spark and there is no spark so I changed the modular in it which is also knon as the (electric pack), it still dosen't have spark, Please may I have more suggestions on getting it fixed.