SKP47829 Posted December 28, 2015 Report Share Posted December 28, 2015 WHEN I FLUSH THE TOILET WATER SPLASHES UP INTO BOWL BUT DOES GO DOWN THERE IS A NOISE THAT FOLLOWS AFTER THE FLUSH VALVE IS CLOSED THE VENT IS CLEAR BLACK TANK, IS EMPTY. Link to comment Share on other sites More sharing options...
Yarome Posted December 28, 2015 Report Share Posted December 28, 2015 Is your vent properly capped? Are you sure your vent pipe is clear and there is no "brown buildup" at the end of the vent pipe inside of your black tank? Does your vent pipe have proper clearance from the bottom of your black tank? It's not completely uncommon to have a vent pipe improperly cut to length and only have a small gap between the end of the vent pipe and the bottom of the black tank. The result being that even a small amount of buildup or water can prevent free vent flow. It sounds like you either have a yet undiscovered vent blockage our you're getting wind pressure build-up due to an improperly capped vent pipe (like blowing over the top of a beer bottle ) Link to comment Share on other sites More sharing options...
SKP47829 Posted December 28, 2015 Author Report Share Posted December 28, 2015 THE TOILET HAS NEVER DONE THIS BEFORE IN THE PAST 17 YEARS, BUT I'LL RECHECK THE VENT AS THIS WAS MY ORIGINAL THOUGHT. THANKS Link to comment Share on other sites More sharing options...
bobsallyh Posted December 28, 2015 Report Share Posted December 28, 2015 Depending on the noise if your pottie has a vacuum breaker on it, this could be the sound you are hearing. Never heard it in ours until about a year ago and is still there today. Maybe it is fixing to go south but I'll wait it out. Link to comment Share on other sites More sharing options...
docj Posted December 28, 2015 Report Share Posted December 28, 2015 We also have a Sealand toilet. Shortly after we started fulltiming we had something that sounds similar happen to us. What I think you are describing is that when you try to flush additional water comes into the bowl but what's there doesn't go down? In our case the water in the bowl would go down very slowly and if you had kept your foot on the flush pedal for long you would have overflowed the bowl. In our case the problem was a blockage in the pipe below the floor going to the tank. We hadn't seen anything because the origin of the block was pretty deep down just before the tank. We were relative newbies at that time and have, since then, been much more careful with respect to using lots of water for flushing and watching for buildup on the walls of that pipe. We cleared the blockage (carefully) with a piece of PEX used as a auger; since it is relatively soft it was unlikely to damage the pipe we were clearing. I don't know if this is the same problem you have but thought I'd pass this along in case it was. Sandie & Joel 2000 40' Beaver Patriot Thunder Princeton--425 HP/1550 ft-lbs CAT C-12 2014 Honda CR-V AWD EX-L with ReadyBrute tow bar/brake systemWiFiRanger Ambassador Follow our adventures on Facebook at Weiss Travels Link to comment Share on other sites More sharing options...
Kirk W Posted December 29, 2015 Report Share Posted December 29, 2015 Does the toilet sit directly over the black tank with just a short, straight, section of pipe dropping vertically into it, or might you have one of the longer runs where the pipe makes a couple of bends before it enters the tank? If you have bends then I think it probably is some buildup that has remained in the pipe and needs cleaned out, much as Joel is suggesting. Good travelin !...............KirkFull-time 11+ years...... Now seasonal travelers.Kirk & Pam's Great RV Adventure Link to comment Share on other sites More sharing options...
WeBeFulltimers Posted December 29, 2015 Report Share Posted December 29, 2015 So this toilet is 17 years old? Fulltiming since September 1, 2010 2012 Ford F-350 PSD SRW Lariat Crew Cab 2012 Montana 3585SA Link to comment Share on other sites More sharing options...
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