Steve, Crappy Job! I had black water returning to the head on my previous 1981 36KCB and current boat. Salt from urine crystallizes on your joker valve and the joker valve leaks back. Ideally we are supposed to flush clean water thru but it never happens on the Great Lakes when you are trying to conserve holding tank space. Two ideas for you are: 1. Change the joker valve annually, I could never get 3 years out of a joker valve. (I keep a spare on board and change it when required.) 2. Install a shut off valve on the holding tank intake line. ( I installed a second holding tank and the control valve I used has an off position. Not a fix but helpful.)
Len Mitchell S/V CRAZY LEGS 1989 C&C 37+ Midland On. _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com [email protected]
