98 v6 mustang no start

Hello everyone,

I acquired a 98 mustang with v6 engine that had been setting for several months. It had a problem with the anti theft system and I fixed that. However, now I cannot get it to start. It turns over good but will not crank. It has fuel in the rails and good spark and a brand new battery. Anyone have an idea of what might be wrong or what I can check? Is there a known issue with these cars? Any help would be apprciated!