It only cranks but wont start?

Check to make sure it don't have a wire still disconnected and I would also check around the battery looking at your wires and connection plugs make sure each one is plugged in all the way and wasn't accidentally damaged or unplugged

Well my roommate took him battery out to jump someone. Im Sure he tugged to hard taking the cables off. But it was fine til he did that. I keep telling him to check all those wires. But he had jimmy rig guy come look at everything but what I said. Im with you on this. I will be sure to let you know cause now that you said the same thing Im gonna take over messing with it threw you. Thanks I'll keep you updated