318 Wont idle

Two clue finders for you.

1.hit it with a shot of your starting fluid when it tries to die out and see if it tries to keep running. (don't open the throttle at all) just as it starts to die out , hit with fluid.
What does it do?

2. Leave your timing light connected and when it starts to die out see if the timing light stops flashing as it slows down and dies.