I think my issue is the idiots put silicon / silastic on the pump O.ring and around the filter exit port (where it clamps against the skis transom). I think silicon was blocking the hole. I blasted water down where the pump normally joins at the back of the ski and the pisser flowed and all was normal..

Would remove and clean the one way valve. But they faced one of the clamps toward the engine, so I can't get to it..grr.

How does one know if the one way valve is.working correctly?

And

How do you remove the pump filter cap. Pry off or.unscrew? Would like to.check while pump is off

Cheers