Hi Tom,
Is it possible that the tank has a few gallons of microbial growth
(bacterial and fungus) that gas created clumps/sludge on the bottom of the
tank taking up good fuel space?
Be careful using a bio ide, as a friend told me he did this and a few weeks
later while returning through Active pass in choppy seas, some clumps
blocked his fuel filter. Fortunately he had previously installed a parallel
filter, and a quick flip of a switch to the backup fuel filter got the
engine running again with no other problems.
Good luck.
David Miles
Impulse 1998 C&C 30MK2
On October 30, 2019 11:47:45 Tom Buscaglia via CnC-List
<cnc-list@cnc-list.com> wrote:
I have a puzzle. I was on my way to fill up last trip out for a nice
weekend rendezvous with out club when I ran out of fuel. Fortunately, I
was close enough to our club in the inner harbor. I dropped the dinghy and
ran to shore to get a gerry can of diesel. When I finally got to the gas
dock in Tacoma she only took 24.5 G of diesel. I made sure that the filler
tube was open and even intentionally overfilled it to make sure the vent
was clear (than god for my catch can!) I made sure the tank was topped off.
I have never trusted by gauge as it would show empty when there was 1/2 a
tank left. I used to chart all time and distance religiously in my old
boat and did the same on Alera initially. Then I realized that unlike out
old 35 MK1 Alera had a functioning Hobbes meter. So over the last few
seasons I got lax and instead of copious logging I just take a picture of
the Hobbes meter at every fill up. Made sense and eliminated the problem
of accounting for sailing time on long runs. Based on the Hobbes meter
reading from the last fill up the engine ran 26 hrs. Very consistent with
my established burn rate of 0.9 GpHr.
I started to suspect that maybe the PO had replaced the original 40G tank
with a smaller one. However, when I checked my log book I have had several
occasions where the fill up was more than30G.. Not many, but more than one
or two over the 25G mark.
The rancor is clean and aside from need to bleed the system down to the
injectors to get her started after the stall out, no air leaks in the fuel
system. Motoring in flat seas, so sloshing fuel is not it either.
Have at it C&C sleuths...I am at a loss.
Tom B
.¤º°`°º¤,¸¸,¤º°`°º¤¤º°`°º¤,¸¸,¤º°`°º¤.
Tom & Lynn Buscaglia
SV Alera
C&C 37+/40
Vashon Island WA
(206) 463-9200
www.sv-alera.com
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