Thread Tools Search this Thread Display Modes
Old 10-04-2017, 10:56 AM   #1
2 Rivet Member
2010 27' FB International
La Crescent , Minnesota
Join Date: Feb 2007
Posts: 96
Black tank flush plugged

The flushing system on our 27' FB is not operating.
I have gone into the closet and removed and verified that the check valve is working properly.
Next I completely filled the black tank with a mixture of 3 gal of vinegar, a cup or so of Calgon, a cup or so of Borax, and water. This was to cause any solids that might be on the spray nozzles to dissolve.
The next step was to spray a product called Dissolve IT down the pipe in the closet that supplies the spray system in the tank.
Finally I blew air from an air hog into the pipe after letting everything sit for a day or so.
The air did seem to go through although not as rapidly as I expected it should if the system were clear.
After letting it sit another day The air is unable to move the the system.
I am stumped!
Anyone else encountered this?
I would be grateful for any thoughts.
Jay Jensen

mjayjensen is offline   Reply With Quote
Old 10-04-2017, 11:21 AM   #2
Half a Rivet Short
2017 30' Classic
Carlisle , Pennsylvania
Join Date: May 2017
Posts: 6,121

The holes in the "wand" are pretty small. Hook up to a water source that has "crud" in it and you might plug things up. If so, you want to use something designed for hard water deposits and "scale" to get rid of the stuff. Of course if it's sand .... that will not work either. I'd at least give it a try. You want the "industrial strength" version and not the "environmentally approved" stuff .... Plumbing department at Lowes or Home Depot is your friend in this case.


uncle_bob is offline   Reply With Quote
Old 10-04-2017, 11:31 AM   #3
2 Rivet Member
2010 27' FB International
La Crescent , Minnesota
Join Date: Feb 2007
Posts: 96
Thanks Bob!
i will give it a try.
mjayjensen is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Plugged or Un-plugged in the Driveway clancy_boy Winterizing, Storage, Carports & Covers 25 10-02-2017 02:14 PM
Black Tank, Grey Tank, New Tank, Old Tank Bunkroom Waste Systems, Tanks & Totes 3 07-22-2014 09:35 PM
Black Water Tank plugged? JourneytoRet Flat-Front (Cutter, Clipper, XC, XL & Skydeck) Motorhomes 13 07-24-2013 07:42 AM
Fresh Tank to Black Tank Flush (Spray) withidl Waste Systems, Tanks & Totes 19 05-23-2011 06:41 AM
Black Water Tank Flush-Install JaceBeck Waste Systems, Tanks & Totes 0 04-30-2002 12:54 PM

Featured Campgrounds

Reviews provided by


This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 10:13 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.