Break, curse, fix, repeat
Join Date: Feb 2007
Location: Bainbridge Island, WA
Thanked 2 Times in 2 Posts
Rep Power: 9
My system on Aeolus
On Aeolus I do a few things to reduce fuel problems. For one, I run a biodiesel blend of about 50% for purely mechanical as well as environmental reasons. No doubt about it, biodiesel does act as a detergent and cleans things out. My diesel Mercedes is the same deal. Had to replace a few filters after the first few tank fulls, and now no problems.
Anyway, Aeolus has a Racor primary and standard engine mounted secondary. I run a 2 micron primary filter because the filtration capacity is something like 30gph and my Universal M40 only uses 1 gph. I want that Racor to keep anything from even making it to my secondary.
My "polishing" system is to get back from a nice bouncy sail, tie to the dock, go below, disconnect my fuel return from the engine and connect it to my electric fuel pump "out". This way, the fuel pump is pulling fuel through the Racor, and pushing it right back into the tank through the return line. I do this once or twice a season and just leave the ignition key on and let the pump do its thing for 20 minutes or so. I measured once and found this amount of time would circulate more than double the tank capacity.
I know this is less thorough than removing the tank and so forth, but Gulf 32's have 70 gallon diesel tanks that are integral to the hull. They do not come out without major surgery.
I have never once had a fuel related engine problem. She runs smooth like silk and I think my filtration and "polishing" are a big help.
Good luck and best wishes,
Bainbridge Island, WA
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