Winnebago generally enables access to most of the hoses so you can do a visual inspection. Using a flashlight, see if you can access the area, looking behind drawers, open areas in back of cabinets, etc. in my case, there are two access points that look like heating vents which allow visual inspection of the hoses and vent pipes. In addition, if behind the shower, look behind the shower valve and also look for an access point at the front bottom of the shower. You may also want to use an iPhone to reach in a take a photo of hard to reach places. Look especially where the hoses meet that valves, and any joints. Anyway, I’ve tracked downs a few leaks this way without fail. Best of luck!
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2023 Newmar Bay Star 3014, towing 2014 Honda CRV
2017 Winnebago Adventurer 35P
2013 Itasca Sunstar 26HE
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