I have a 2005 Caravelle 23' walkaround with Mercrusier 5.0L Alpha Sterndrive 220 hp.<br />Purchased April 2005.<br />I have 125 hours on it.. twice this season, something strange happened:<br /><br /> Back in July, I was cruising along at 4,000 rpm. All of a sudden there is a sharp decrease in...
