(Robert M. Gary) wrote in
om:

Years ago, I almost made myself pass out
smelling the fuel from the Aeronca. I couldn't convince myself whether
or not I saw blue (I wasn't worried about mogas, I was concerned about
water since it has just rained).

Yeah, sure... that's your story, and you are sticking to it. G

You're right, it can be almost impossible to tell if it is really
slightly blue. And at night, where there isn't any good non-biased
light source to use, it can be impossible.

One option is, of course, to ADD water to the sample. No "bubble" and
it's *all* water.

What I usually do is first drain from the engine fuel filter, under the
theory that since the engine was running at shutdown there must be at
least a LITTLE gas in there. If it looks good, then don't pour all of
it out, and now add from the left main. If it looks good, then don't
pour all of it out and now add from the right main.

The idea is that there should always be some known fuel in the tube, so
you don't have the risk of thinking an all-tube WATER sample is fuel.

-----------------------------------------------
James M. Knox
TriSoft ph 512-385-0316
1109-A Shady Lane fax 512-366-4331
Austin, Tx 78721
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