Bill Freeman wrote:

I made a mistake in my LE fuel system description.

The electric "boost " ( backup) pump is UPSTREAM of the
engine driven mech pump.  This is * important*, and the boost
pump is low mounted to stay flooded by gravity feed from the
fuel tanks.  Vapor in the system rises to the mech pump, but
the boost pump can push it thru.  Make sure to have no vapor
trapping high loops upstream of the boost pump.  Your
(inevitable) vapor bubbles at no-flow (hot soak) must be able to
move past the first pump to keep the pump working at low fuel flows, like
starting.  Once running, the fuel flow usually cools the pumps
enough to keep it OK.

Bill

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