I have an 86 Z28, 305 TPI that wont start. It was running and driving perfectly, then i went to the mall shut it off and came back an hour later and it wont start. The battery is new, It will start with starting fluid, but only runs for about 30 seconds, if i start it with starting fluid it will run and the engine will rev, but after a few seconds it seems to choke out. If anyone has experienced anything like this I would Be forever grateful for the help.