Originally Posted by 07 ThunderRoad
Used the black water tank flush and noted water flowing out from under the side of the coach. .......
My Lacrosse did the same the first time we used the black tank flush. Water was running across the bedroom floor and going under the walls, and was running out from the underbelly.
Turns out the plumbing fittings behind the UDC (where the hoses and coaxs connect) were not properly tightened. After the dealer said he fixed it, it still leaked and I had to tighten the fitting even more.
Makes you wonder how testing and PDI checks don't find out manufacturing defects like this.