Bad odor when flushing black tank
When I dump the black tank and flush is causes the whole camper to smell. I close off both grey tanks, dump black tank with the flush system running while, flushing, then I close dump valve for a cou...
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I disagree about the tank not draining well with the roof vent(s) clogged. Mine drained fine with the roof vent clogged. There is enough air available along with the discharge flow, and also forced around the toilet seal.
My issues were actually with both the grey and black tanks blocked from wasp nests, but my major issues were with the grey tank. That vent pipe was installed about 2-3 inches low into the grey tank, (and 2-3 inches below the roof, which indicated the installation problem) and when the tank was nearly filled, the vent inlet was below the water level, and could not then vent. The foul vapors would then vent through (overpower) the under sink vent, or adjacent sinks. I plumbed a flexible line bypassing the under sink vent directly to the exterior, which solved the problem.
My issues were actually with both the grey and black tanks blocked from wasp nests, but my major issues were with the grey tank. That vent pipe was installed about 2-3 inches low into the grey tank, (and 2-3 inches below the roof, which indicated the installation problem) and when the tank was nearly filled, the vent inlet was below the water level, and could not then vent. The foul vapors would then vent through (overpower) the under sink vent, or adjacent sinks. I plumbed a flexible line bypassing the under sink vent directly to the exterior, which solved the problem.
