K. Smith wrote:

The usual method to "test" is to;
(i) clamp all usual outlets at the end of their runs (that way you
test the unions taps etc),
(ii) fill with diesel or water,

WRONG

Do *not* fill a fuel tank with the wrong kind of fuel, or water. I think
most people would be smarter than to do this anyway, but I felt I should
speak up just in case.

Note to rec.boats regulars- I generally skip K.Smith's posts but checked
this one.

DSK