The NSI sump tank has a holly float mechanism between the incoming

fuel

line

and the tank. The incoming fuel boost pumps are switched by a low

level

switch on
the sump tank and fuel flow shut off by the float on the tank. Fuel

does

not

seem to
heat up at all.

vince robertson

Does the plane in question have EFI?  If not, what is the value of this
observation?

Tracy

Hey Tracy,

    Yes they do use EFI. All stock Subaru on the engine as far as I can see.

John Gibbons

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