1998 Chevy Astro

Engine Mechanical problem
1998 Chevy Astro 6 cyl Two Wheel Drive Automatic

ok so if I had used starting fluid to try and start my van from what I understand that I have damaged the spark plug is that true? So what do I need to do to get my van running, I changed the fuel pump I checked the lines if fuel the gas were going to the injector area, this van have been sitting 1 1/2 years before they gave it to me, can someone pleae lend me a hand I don't, I don't want to give it up ok HELP HELP