View Single Post
Old 03-25-2015, 06:45 AM   #2
billr
Senior Member
 
Join Date: Jan 2006
Location: Ontario Canada
Posts: 857
A couple things could cause it.

Grey tank full, usually the shower is the first place though.

Something is plugged up in the drain? May need to root it out.


The drain vent has a check valve in it. Could be bad. Replace it. the whole thing. They have them at Home depot.


Bill
__________________
Bill and Joan
4 Collie pups
05 M/S 38RL3 #2046
01 Volvo VNL770
05 Smart Passion Loaded piggyback
https://picasaweb.google.com/billandjoan
Weigh-It Portable RV Scales
https://www.weighitrv.com
billr is offline   Reply With Quote