Jayco RV Owners Forum

Thread Tools Display Modes
Old 04-14-2015, 07:12 PM   #1
Junior Member
Join Date: Feb 2015
Location: Star
Posts: 28
Black tank plumbing issues on Pinnacle....anyone else?

We have a 2012 Pinnacle 36KPTS. We've been full timing two weeks now. We had a major clog at the first 90 degree elbow from the toilet to the tank. That was our fault.....newbie mistake....not enough water. We've been using Angel Soft TP. Hubby cleared the clog so we've been using tons of water when we flush. Today, we had another clog, same place. Today, we switched toilet paper to Scott's 1 ply.Question for other Pinnacle owners.....is anyone else having issues like this? This is a very poor design. I hope the new tp solves it.....

2012 Jayco Pinnacle

It's all fine and dandy until someone's marshmallow catches fire!!

5thwheelgypsy is offline   Reply With Quote
Old 04-14-2015, 08:43 PM   #2
Senior Member
NVGun40's Avatar
Join Date: Feb 2015
Location: Eagle River, AK
Posts: 530
We tried one of those baby diaper disposal pails. Drop the wad of TP in, give it a twist and its sealed. No smell, and no toilet paper in the tank to foul the sensors.... Even still when we have guests who forget the diaper disposal, we utilize the RV toilet paper, it dissolves easier.

2015 White Hawk 25BHS Glacier Package
2004 Dodge Ram 2500, 5.7 Hemi, 5Spd Manual
2008 Arctic Cat M1000 SnoPro
Previous: Northface tent/Komfort 5er/Jamboree MH
Lance Cabover/Prowler TT/WildernessTT/Tiltin Hiltin Cabover/Starcraft popup
NVGun40 is offline   Reply With Quote
Old 04-14-2015, 09:02 PM   #3
Senior Member
UPCamper's Avatar
Join Date: Jun 2014
Location: The Mitten
Posts: 459
If you are flushing TP down your RV toilet, it should only be RV compatible toilet paper. Regular stuff will cause problems. However, the elbow you say you have in your drain doesn't help either.
UPCamper is offline   Reply With Quote
Old 04-15-2015, 07:51 AM   #4
Senior Member
Seann45's Avatar
Join Date: Jun 2010
Location: Saskatoon Sask Canada
Posts: 8,764
You are leaving the black tank valve closed till the black tank is full right? Never ever leave the black tank open...
2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 765 watts of solar, 6-6 volt batteries (696 amp hour), 2000 watt (4000 surge) whole house inverter.
140 days boondocking in 2016
211/2015, 196/14, 247/13, 193/12

Seann45 is offline   Reply With Quote
Old 04-15-2015, 09:06 AM   #5
Senior Member
TWP723's Avatar
Join Date: Mar 2015
Location: Abingdon
Posts: 2,865
That's a poor design. Black water tank plumbing should always be designed to run straight out. Never understood why designers did that. Everyone knows, the quickest way out is straight. Same thing with a/c or heat. The more bends you have in the duct work, the more the flow is restricted.
TWP723 is offline   Reply With Quote
Old 04-15-2015, 12:33 PM   #6
Senior Member
Murff's Avatar
Join Date: Mar 2015
Location: Seattle area
Posts: 1,254
Before... uh... you drop the kids off in the pool, be sure to make the bowl the deep end by filling it with water.
2015 White Hawk 20MRB
2011 F150 Non EcoBoost (5.0)
Andersen Hitch
Murff is offline   Reply With Quote
Old 04-15-2015, 01:55 PM   #7
Senior Member
Join Date: Aug 2013
Location: NC
Posts: 923
Black tank stays closed until it reads at least 3/4 full then dump it and close it back. Because of sewer gas we don't even leave grey tanks open. I can dump black and then grey in a few minutes and good to go for 2 days.
No man has a good enough memory to be a successful liar. Abraham Lincoln

2016 36FBTS Pinnacle
2016 F350, 6.7, 4x4, DRW, long bed
B & W Companion 5th wheel Hitch
eldermike is offline   Reply With Quote
Old 04-16-2015, 12:19 AM   #8
Senior Member
Join Date: Jul 2014
Location: Kennewick
Posts: 203
Angel soft changed their TP and does not dissolve like it did in the past. We tested Costco brand TP and it dissolves quickly. When you think you used enough water when you flush the toilet add more.
2014 Eagle Premier 361REQS
Mor-ride pin box
2013 GMC Sierra 2500 CC SB 4x4 Duramax
skijlw is offline   Reply With Quote
Old 04-16-2015, 04:24 AM   #9
Senior Member
Larry G.'s Avatar
Join Date: Dec 2011
Location: Reno (home base), Oregon coast, Eloy, AZ
Posts: 838
Are you using your black tank flush?

If one does not use a quick dissolving toilet paper you should.

Also a good chemical liquid tank treatment should not be avoided.

We use TankTechs Rx. 34oz bottle (68 treatments) retails for $39.95 ($.59 per tank treatment) and well worth it.

***You may have to get the "sewer guy" to remove/flush (high pressure water introduced straight up the dump outlet) all the buildup at the bottom of the tank. While he's at it he can remove any mildew or other things going on in the grey tanks. One might be suprised what is in those tanks.

We use TankTechs Rx in all our tanks.

2012 Pinnacle 36KPTS - Kitchen Pantry Triple Slide
Mor/Ryde suspension and pin box, Dual pane windows, Auto Leveling System, 2 A/C's and more...
View photos

Our Trip Journal
Larry G. is offline   Reply With Quote
Old 04-16-2015, 06:15 AM   #10
Senior Member
edatlanta's Avatar
Join Date: Dec 2009
Location: Maplesville, AL - Home Base
Posts: 2,261
My Designer has a similar turn right at the bottom of the drain right at the black tank. I too had a plug one time early on. I full time and in year 5 and never a plug since:

I use zero chemicals in the tank
Only empty when tank "burps" and I know it is full
I use Northern Quilted multi ply TP
I use the tank flush most every time I dump the tank but not every time (I didn't use the flush at all for 3 months early this year since the park had such low water pressure I just didn't bother)
I do not put TP in a trash can or other device - it all goes in the black tank

What I do to prevent clogs is:

When ready to flush I fill the bowl up enough to cover whatever is in the tank and wet all of the TP. I then flush and fill the tank again up to at least the same level and flush again.

Never a problem in 5 years.


2006 GMC 2500HD CCSB 4x4 Duramax/Allison, Titan 52 gallon fuel tank, Prodigy Controller, B&W Companion Hitch
2010 Jayco Designer 35RLTS, Cummins/Onan RV QG 5500 EVAP, Progressive Industries EMS-PT50C, TST Systems 507 TPMS, RV Flex Armor Roof
edatlanta is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Virginia State Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -6. The time now is 12:24 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.