There appears to be no fuel return for the RX-8.

Looking at the fuel system diagram, I see no return line. I see no return line on the engine. The manual says that the pressure regulator is built into the fuel pump. In the diagram, the pump is in the tank.

By the way. I bought both the paper engine overhaul manual and the CD ROM general service manual on Ebay. The fellow that sold the CD for $6.95 plus $3.99 s&h is:

horsepowerengineering@hotmail.com

HorsepowerEngineering
506 1/2 Grier St.
Williamsport, Pa 17701

The engine overhaul manual came from

maggiekr2004@yahoo.com

for $20.45 plus $5.00 s&h

Bill Dube <LED@Killacycle.com>
http://www.killacycle.com/Lights.htm