Head Pump Loud Priming Noise

[glenn925]

Hi all. I own a 2018 27 Vantage. When I turn on the head to be able to flush it, there is a loud priming noise coming out of the pump. After each flush, it makes the same noise. Any idea how to fix this other than replacing the pump? Thank you. Glenn

[CaptBrett]

Hi there Capt, 

This sounds like the Duck Bill Valves are bad.  Take a look here.

 https://youtu.be/WI0Z736H3P4 

If you are willing to get a little dirty and smelly, this is a simple fix.