Power Loss F115 4 Stroke

We have a 2001 F115 hp 4 stroke. We experienced loss of power under pressure on Saturday. We changed the plugs and cleaned the fuel filter. No help. Any ideas.

Ya, I have the same issue , not have much reply on this sight, but look at the two treads I got going. also Bloodydecks.com search , I found something on there.
this is where I'm at, this looks like A issue yam. should of had recall on, I hope to test the psi in fuel pump, but from what I read, There is trash getting past filter, need micro 10 filter, trash in in the injector screens or in the high end fuel pump. the screen is so fine you can't see it with your eye, take air and blow injectors out, that's what I'm going to do