Author Topic: simple fuel line plumbing question (Read 2258 times)

rwinter · « **on:** February 19, 2008, 11:47:05 PM »

I need to check which line is the inlet and which is the outlet to the fuel rail. There are two metal lines which the hose connects to near the intake manifold. A silver line and a black line, with the silver line on top. If someone could help me out here I would really appreciate it!! I posted the same on engine management but I think maybe not a lot of people go there. Thanks in advance for the help!

D. Clay · « **Reply #1 on:** February 20, 2008, 01:19:28 AM »

The lines coming from the tank at the inner rocker panel are presure - top line and return - bottom line. The rubber hose for pressure in goes to the rear line on the injector rail and the return hose to the front line from the injector rail.
http://www.realoem.com/bmw/showparts.do?model=AF93&mospid=47305&btnr=13_0308&hg=13&fg=15

rwinter · « **Reply #2 on:** February 20, 2008, 02:08:35 AM »

Thanks!!!!

oldtimer · « **Reply #3 on:** February 20, 2008, 06:30:13 AM »

for visual identification, the fuel line that is leading to the stainless steel line is the pressure line or the feed line.