We started after a 3-year workyard layup
with no issues. Turn the key, push the button, Vroom.
But, we also added a fuel polisher in our initial refit
. We had a MAJOR (see archives
"I learned about sailing from that") wreck in which we were lifted and banged on a limestone shelf, being pushed 150' inland on a normally-dry-at-low-water location, and an estimated (wave period and storm duration) 3-5000 impacts.
Our tank was probably about half empty. We were reasonably sure that the tank had gotten a very thorough mixup and delamination
of any grunge from the fiberglass
So, we ran the fuel polisher long enough to clog the 30/10 micron-in-series filters (measured by vacuum), and changed them. On the way back to the same work yard we had left 36 hours before our wreck, we had only our staysail and a spinnaker
; we did a LOT of rock and roll. So, we continued our polishing for the 5 or so days it took us to get back.
Changed the filters again, and, recently (that first was 8 years ago), did another change, "just because" - they were dirty, but no sludge in the bottom of the canisters.
I made my first Racor
change at over 1000 hours from the wreck, and it wasn't really necessary - it turned out my issue of the time was a loose line letting in air.
So, make your own fuel polisher, if you have the sources over there for a Walbro pump and a couple of canisters in line. I got my stuff from McMaster-Carr, but that's a long way from Croatia