Once you lose your engine out in rough seas. (That is when it happens) You will understand fuel polishing
Exactly. Happened to me off the North/West point of Cuba
and it was not nice messing with fuel
in that situation. Turned out to be a blocked fuel line at a 90 deg. bend at the top of the tank. I never did know if it was asphaltenes or biological because I didn't know, at that time, how to tell the difference. A few drops of bleach will tell you. If it changes color it is biological.
There is a thread on the forum and a post from Jedi with a schematic of his fuel polishing system. It is worth the search. Use the google
custom search box.