Forum Discussion

rberg's avatar
rberg
Explorer
Jun 04, 2016

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 black holding tank several times and dump it after every camping trip before we leave the RV park and still we have this bad smell. I have power washed the underside with Pinesol and water and it still smells.
What do I do now?
  • Mr__Camper's avatar
    Mr__Camper
    Explorer
    Jun 04, 2016
    Check the underbody for a hole that may have allowed something to crawl up and die.
  • cbshoestring's avatar
    cbshoestring
    Explorer II
    Jun 04, 2016
    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.
  • rberg's avatar
    rberg
    Explorer
    Jun 06, 2016
    My concern now that you have given me a couple of possibilities, is that the "stuff' has dried and may never come out of the insulation. The dealer can't find it after about $150 worth of labor and parts. I am tempted to just rip off the insulation and leave it off, since we don't camp in the winter anyway.

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