Ok, it starts and runs cold ok....if you were to drive it a long distance say, half an hour, still ok when coming to a stop, and it idles ok? Then you shut it off, will it restart right away? If it does, but you wait 10 minutes or longer, it won't?
Sure it'* a 3300 and not a 3100?
Have you checked for codes?
Check the vac line to fuel pressure regulator for fuel....
Like all vehicles that won't start, you check for fuel pressure, spark, and injector pulse....