Help! 1994 4.3L 200(205?) HP mercruiser starts great, idles fine, runs 3 - 3.5 K just fine, but acts like it runs out of gas when run at 1800 - 2000 RPM for more than a few minutes. Restarts OK and then were back to square one, cruise and idle, works good, midrange throttle, kills after 3 - 10...
