Bad smell by dump valve
We have a Jayco trailer with the four season package (it's insulated underneath) and now we have a bad small, somewhat sewer-like, near the dump valve (sewer hook-up). We have flushed the trailer blac...
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Another possibility is a hole in the drain pipes, allowing some stinky stuff to get trapped between the trailer floor and the under-cover. You could poke a small hole in the cover, near the dump valve, see if you get leakage....when dumping. Just remember to patch the hole...or refer to the above.
