Hello i'm new here. I just recently got a 85 Ford Ranger. 2.3 fuel injected. I was driving down the road, and felt kind of a lunge and then the truck died. Now there is no spark. The pully on the cam isn't turning. I took part of the timing cover off, and noticed that the bottom pully was spinning, but the belt wasn't moving. Any ideas of what would of broke? And do you have step by step instructions for replacing the timing belt?
Thanks!

 

this happened in my old car...the water pump started leaking and it got onto the belt and the teeth got sheared off