Loss of Gas preasure

[sdrmichigan]

I have a Merc 175 outboard. I loose preasure while the boat is running. I replaced the hoses and fittings. This is intermitant. One day run fine next engine starts to loose power. If I pump the ball while it is running I get back to full power but need to continue to pump ball. Any ideas?

[boats.net]

Could be a fuel restiction in fuel delivery hoses or gas tank, could be air leaks in fuel hoses or filters. Could be a bad fuel pump.