Diagnosing a fuel delivery issue and no longer identifying that mystery hose

[Howie]

I can't imagine what the yellow floating stuff is.  If you figure it out, let us know.  I would save a sample and contact whomever the gasoline company is if you believe the stuff came out of the pump.  Anyway, after cleaning out the tank I would use some Techron or Sea Foam with the fresh gas.

[Jobu]

I thought you had already drained the tank and refilled it to no avail    That should have been one the first things suggested.

Oh well, at least you figured out what the problem was.    And definitely add some kind of carb cleaner/fuel additive as Howie suggested.

[Bigbore4]

Well, the clean out is going to happen tomorrow.  I'm keeping my fingers crossed that it will work!

It is whatever came out of the 89 octane pump the last time Stillie filled up.  No kids except the furry kind.  It also burns... kinda... but not well.

Did that do it?