Forum Discussion

Vinman02's avatar
Vinman02
Explorer
Jul 06, 2017

Black roof vent intentionally plugged

I recently picked up a used 2007 Nash TT and have noticed a strong black tank odor immediately after towing it. Today I removed the existing roof top vent to install a swivel vent and discovered the black pipe was plugged with a wad of paper towel. Any logical reason why somebody would do this? Or was somebody playing a prank on the PO?
  • rbpru's avatar
    rbpru
    Explorer II
    Jul 07, 2017
    with a 2007 it would be hard to know for sure. But typically folk plug the hole when they are working on it and do not want debris to fall in the hole.

    Most likely an oversight on someone's part.
  • Vinman02's avatar
    Vinman02
    Explorer
    Jul 07, 2017
    coolmom42 wrote:
    Possibly to keep the vent hose from being invaded by dirt daubers and other critters while the RV was not in use.


    I don't think so since we don't have much for invasive creatures like mud daubers in Alberta and only one of the the three waste tanks had the vent plugged.
    That being said, I guess it's possible they were all sealed and someone simply forgot to unplug one vent.
  • Bigdogboogie's avatar
    Bigdogboogie
    Explorer
    Jul 06, 2017
    coolmom42 wrote:
    Possibly to keep the vent hose from being invaded by dirt daubers and other critters while the RV was not in use.


    That's a very good possibility if the OP's area has as many dirt daubers as we do here.

    Anything not covered or screened gets plugged by a mud nest pretty quickly.
  • coolmom42's avatar
    coolmom42
    Explorer II
    Jul 06, 2017
    Possibly to keep the vent hose from being invaded by dirt daubers and other critters while the RV was not in use.
  • gbopp's avatar
    gbopp
    Explorer
    Jul 06, 2017
    Fortunately you found the problem quickly. If it continues check for a bad air admittance valve under the sink.

    Try The Geo Method to clean your tank
  • Vinman02's avatar
    Vinman02
    Explorer
    Jul 06, 2017
    Thanks for the response, hopefully clearing the pipe and new vent covers will eliminate the odors.

    Vince
  • ParkCountry's avatar
    ParkCountry
    Explorer
    Jul 06, 2017
    I can picture someone trying to find the source of the malodorous stench, not understanding the purpose of the vent, and having an "AHA!" moment, stuffing the rag to fix the problem. That's my take on it, anyway.
  • pickjare's avatar
    pickjare
    Explorer
    Jul 06, 2017
    Some prank. My guess would be someone plugged it while working either on ithe vent or on the roof itself, and just forgot about it. Lucky you found it that easy.

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