I have a 1971 ford f100 with a 302 and it was sitting on a hill for about six years and i finally got it off the hill and i got her to start after i installed a starter, a fuel pump, an ignition switch, an ignition coil, starter solenoid, and she didn't idle for long before she tried to turn off and now she wont do anything when i turn the key and yes i have checked the battery and it is fine what else could it be please help me