I'd love to use my flush attachment for my 2001 115HP Mercury outboard, but when I hook it up, no water comes out anywhere. Owner's manual says I can flush with motor off or in idle... I've tried both ways but water flows neither from telltale nor prop. Water is making it to brass elbow in cylinder head - when I wiggle hose there, I can get water to spray out. When flushing with earmuffs, everything is fine - I get a real steady stream out of telltale, as when motor is operating. Any help would be greatly appreciated.
