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For the past 3 years, our First 35s5 has been experiencing a strong diesel
smell in the forward locker. I have spent many hours searching for either a
tiny leak in the fuel tank, or a pinhole in either the filler hose or in the
vent hose, or loose hose clamps. The vent hose for the forward tank had a
very strong odor. Even when I touched the hose with my hand, I would get a
strong diesel smell. This original vent hose was made of black rubber with
the marking 150 W.P. on the side. Our local hose and fittings company
informed us that this was the wrong type of hose to use with diesel, and
that it would allow for fumes to permeate into the locker and into the
cabin. I immediately replaced it with an updated, higher quality 3 ply wire
reinforced hose, (GREENLINE J1527 A1 5/8" ID). TRIDENT also makes a
recommended replacement hose. I also replaced the 2 1/8" ID fuel filler hose
at the same time