im looking for a diagram that shows where all the vacuum lines go on my 89 civic si...

 

 

thanks helps me alot....one more question regarding lines not to sure of tthe name but its the piece that is connected to the fuel rail and on my zc motor looks like a vacuum line of some sort is suppose to go somewhere on the other end anybody have any ideas?

 

fuel return line off regulator, or the actual fuel feed line with the fittings from fuel filter? or the actual vacuum line to regulator

 

yeah, it is the fuel pressure regulator and has a return line back to the tank

 

do you know where the return line should be located inside the engine bay and where it goes to the gas tank

 

return line comes out of firewall down and to the left of the brake booster - metal line thru firewall with rubber hose to regulator