how do i hook up the fuel lines
 

im not to sure how to hook up the fuel line on an 87 rx7 na all the lines are ran to the motor but there not hooked up can any one help me.

a manual with diagrams is very helpful for things like this. you should get one. anyway i digress.

fuel feed line from the fuel filter goes to the pulsation damper on the primary fuel rail. then from primary rail to secondary rail. then from fuel pressure regulator to return line back to tank.

you'd be better off getting a mechanic

or someone who is mechanically inclined

This depends on if the motor has the rats nest or not.

Red line is from fuel filter to Pulsation damper.
Yellow line is from the end of the primary rail to the beginning of the Secondary rail.
Green is from the Fuel regulator on the Secondary rail to the fuel return line.

Of course, this is a direct connection. If you still have the rats nest, then there would be other lines along the way, but they still go to the same place.

are you talking about the fuel supply and return lines? this may help. from the FAQ:

I don't want to buy a shop manual for my car, is there a place where I can still find out the information from one
Shop manuals for both series can be found on-line at:
http://www.cochran-racing.com/FSM/index.html
http://208.62.166.66:82/guest/shop_manuals/
OR
(86-88 only)
http://www.teamfc3s.org/main/factory...ual/1986_1988/
and (89-91 only)
http://www.teamfc3s.org/main/factory...ual/1989_1991/
S5 Wiring Diagrams:
https://www.rx7club.com/forum/showthread.php?t=530860

Where can I find the dealer fiche/parts catalog?
http://www.mazdamotorsports.com/pages/cats/rx7pubs.html

hey buddy! the service manual is at the top of the page!

GL!!!