I'd suggest Peggy Hall's book on head odors. Still in print, I think. I agree with previous comment that stagnant seawater used for flushing can create an incredible foul odor. Flush some fresh water through the head into the tank. There is a simple test for condition of hoses. Covered in Peggy's book and in Don Casey's book. I wouldn't start tearing things out just yet. But replacing existing hoses can't hurt. Good luck.
Dave Castor Port Angeles, WA On Wed, Oct 2, 2019 at 12:33 PM Shawn Wright via CnC-List < cnc-list@cnc-list.com> wrote: > Our 35-2 is similar, even with new hoses and a clean tank. Much of the > smell is from organisms in salt water decomposing, as it occurs even when > the holding tank is empty. I've been told that adding over sized venting > for the holding tank will help, to reduce the anaerobic bacteria which is > causing the smell due to lack of oxygen. This is on my list. > > I suggest flushing some water into your vent line(s) from the outside to > ensure they are not plugged. In our case, the tank vent is tied into the > anti-siphon (upside-down U) on the bowl flush line, so when flushing, some > air is being drawn from the tank instead of outside, causing the smell. I > plan to add a separate vent for the head flush line to prevent this. > -- > Shawn Wright > shawngwri...@gmail.com > S/V Callisto, 1974 C&C 35 > https://www.facebook.com/SVCallisto > > > On Wed, Oct 2, 2019 at 11:59 AM Jeff Helsdingen via CnC-List < > cnc-list@cnc-list.com> wrote: > >> Even the good read expensive hose smells bad after a while. If yours is >> still original it's probably due to be replaced. Possibly the tank as well. >> I've heard it is better to use fresh water from the head faucet to flush >> rather than sea water too. What we did to get rid of the smells was to yank >> all of it out and go with a composting head. So far so good. Good luck. >> >> Jeff >> >> On Wed., Oct. 2, 2019, 2:52 p.m. Blair Clark via CnC-List, < >> cnc-list@cnc-list.com> wrote: >> >>> I beg patience as i am hoping there is some quick troubleshooting hints >>> that can be provided. >>> >>> Purchased a 1990 C&C 34 +. really really happy with boat and currently >>> working through some smaller items to get her up to speed. >>> >>> one of these involves the holding tank. My jabsco manual toilet exits >>> through a Y valve to sea or to holding tank. No external macerator system >>> is in place.. Even when Y valve set to sea I am having a smell go away and >>> then return to the head area. >>> >>> Holding tank was pumped before transport after purchase and appears >>> close to empty. >>> >>> Steps to date: >>> >>> 1) Had a group out on the boat >>> 2) next day head ines appeared blocked as there was back pressure on >>> handle >>> 3) removed lines got shop vacuum cleared lines and flushed with vinegar >>> and water >>> 4 thought everything would be good >>> 5) Noticed smell in head >>> 2) noticed back flow of liquid into bowl >>> 3) again fought with stiff lines and replaced joker valve >>> 3) back flow and Smell went away >>> 4) a few days later after not using boat the smell came back but not >>> from toilet bowl >>> 5) noticed that when I opened door under vanity sink bowl in the space >>> that houses the holding tank that the smell was more extreme >>> 6) thought of taking tank out to inspect during winter but have no idea >>> how to access it to do so. >>> >>> Does anyone have any suggestions as to troubleshoot tsmell, holding tank >>> or lines and or remove tank? >>> >>> Thanks, >>> >>> Blair >>> C&C 34+ >>> _______________________________________________ >>> >>> Thanks everyone for supporting this list with your contributions. Each >>> and every one is greatly appreciated. If you want to support the list - >>> use PayPal to send contribution -- https://www.paypal.me/stumurray >>> >>> _______________________________________________ >> >> Thanks everyone for supporting this list with your contributions. Each >> and every one is greatly appreciated. If you want to support the list - >> use PayPal to send contribution -- https://www.paypal.me/stumurray >> >> _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > >
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