Halfway measures don't work in a situation like this. When there is too much air introduced, its no longer an 'emulsion'. It doesn't act like a lower density liquid, it acts like a fluid with big air pockets and randomly spurts out fuel in different amounts and densities. And how does it flow - laminar or turbulent? Its a mess.
Way back in the beginning Tuner quotes Klaus about "two phase" liquids. The emulsion has to be a mix of fuel with tiny air bubbles for it to act as a lower density liquid.

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