Dock pump-out stations won't work in my boat.

Nautically Challenged

Member
exMember
Joined
Nov 2, 2004
RO Number
15645
Messages
225
I have tried to use the vacuum from my marina to pump my holding tank out, but nothing comes out.
The Y valve was stucked so I replaced it. I can switch it now on either position. I can use my macerator to pump out when I go offshore, but every time I tried to use the pump at my marina, nothing comes out.
What could be the problem?
By the way, one time my tank was full and it started to come out on the little vent hole.
Thanks
 
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