For a system that has a non-returning fuel line system there sure seem
   to be an absurd number of pipes attached to the fuel tank. The top of
   the diagram seems to have cropped something; can you tell me what that
   is? (It appears to be the tank vent & leak detection.)  And while you're
   at it, what's with the Rube Goldberg-esq pipes coming out of the top of
   the fuel tank?

   Russell Kent

Evaporative emissions stuff not applicable for your application.  That's
why I didn't bother including it in the diagram.  The fuel system is
vapor sealed and monitored for integrity by the ECU as required by the
current federally mandated OBD2 emission regulations.  Also, the RX-8
fuel tank is a multiple cavity saddle design that spans both sides of
the center tunnel.  It uses an eductor arrangement on the submerged fuel
pump's  discharge to draw fuel from the sump located on the other side
of the tunnel into the side it resides in.

Mark Sipe


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