OCTOBER | NOVEMBER 2017 BoatU.S. Magazine | 97
replacement interval, or replace if
they’ve ever become submerged.
■ Securing the hose with a zip tie is
NOT found anywhere in the 33 CFR
■ Hose-life expectancy varies by elements and exposures and care, but as
a guide, manufacturers have indicated
fuel hoses that are more than 10 years
old should be considered for replacement. Don’t simply splice in a new
piece; replace the entire hose.
■ Ethanol-blended fuels can wreak
havoc on fuel systems. Deterioration
of the interior of the fuel lines is
common, especially on older hoses.
Squeeze lines, and if soft or gooey,
■ Aluminum fuel tanks and foam
are frequently not good bedfellows.
Generally speaking, foam prevents the
aluminum from producing an oxide
layer, which is its protection against
corrosion. Trapped water will not
drain and results in pitting/poultice
corrosion, potentially leaking fuel into
In the event you don’t have an ABYC
Certified Technician at your disposal, a
marine surveyor should also be familiar
with fuel-system inspection and can be
of assistance. Consult with a certified
NAMS or accredited SAMS surveyor
with ABYC certifications if in doubt.
Michael Hunter is an accredited marine
surveyor, certified marine investigator,
and ABYC master technician from
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One of the many problems caused by
ethanol-blended fuel is that it deteriorates
the inside of fuel lines, as seen here.