wannabdr1ftr

Ok so i picked up a 1991 Nissan 240sx Coupe about a week ago. I drove it back to my house (trip was 87miles) it drove fine and everything, since then i started the car up every so often and it was fine. Started up perfect but now it wont start. I turn the key once, it clicks and then nothing wont start. I thought it was the battery so i changed the battery with the one in my Focus and still nothing. All the dash lights still work, headlights work, blinkers work but the motor wont start. it doesnt even try to. Anyone have any idea what it could be?

__________________