Actually it's a 350 cu in chevy in a 1984 boat with +/- 200 hrs ttl on it.

What is your question?

Actually, it's a 350 cu in chevy motor in a 1984 boat with less than 200 hrs on engine. It starts, runs 5-10 min., then dies when you ease back on the throttle, then won't start again for 30 to 45 minutes. What could be causing this?