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In article .com,
wrote:

sherwindu wrote:

One mechanic said gasoline dries to a powdery residue, which then can
become imbedded in these jets.

I though smoking dope in outboard shops was prohibited. It is
corrosion or other residue clogging the smaller jet size. It comes
down to what Larry said but there's no such thing a powdery residue
from clean gasoline evaporating.

The old highest-test Sunoco (260?) blue dye regularly gummed up Mikuni
carbs on motorcycles. (that was back in the 70s, when Sun had 7 or so
different grades.)

I doubt that any of the current dyes are so coarse or injectors would
foul, but a small 4-stroke carb could be pretty sensitive. Still, I
suspect the mechanic was remembering the bad old days.

--
Jere Lull
Xan-a-Deux ('73 Tanzer 28 #4 out of Tolchester, MD)
Xan's Pages: http://members.dca.net/jerelull/X-Main.html
Our BVI FAQs (290+ pics) http://homepage.mac.com/jerelull/BVI/