Hyundai 2000 sonata will not start.

What is your question?

A family member moved in a year ago and her car was towed and sat for a year. When I last started the car it ran fine. I just tried again the other day it sputtered then died. Now it tries to start but just won't kick in. I sprayed starting fuild in the air filter and it back fires. The tank was half full when parked.