Racor With Too Much Water??
It''s some brown stuff you paint on the bottom inch or so of a dip stick which you then insert to the bottom of the tank (while the boat is sitting level in still water). Any water in the bottom will turn the brown stuff red to the exact depth of the water. If it is more than 1/8th inch in an almost empty tank, I pump out the tank. flush w/ fuel, pump again, then put in clean fuel. Understand, I''ve had some rotten experiences with watery fuel.