E85 Injector Issues... Anyone?

[asshanson]

Back on topic.. on link some guy has been doing chemical analysis on the black goo. Apparently it's nothing related to combustion, he concentrated a gallon of e85, got rid of the ethanol and some other stuff (complicated process I don't understand), and was left with a gooey substance of the same chemical compound. So it's definitely coming from the fuel itself, not lines or anything like that.

They still don't know why it's in the fuel, but they are hypothesizing that it could be molecules that dissolve in gas but with the high ethanol content sometimes break out and build up. People who occasionally run a tank of regular 91 don't seem to have the goop problem anymore.

This was all done in the past couple days so I'm sure more info will be available soon.