I installed a fuel rail and when I installed the fuel pressure gauge onto the fuel rail it read 78 PSI... so I thought that the gauge was faulty because when I installed a B&M fuel pressure regulator and adjusted it the PSI didn't move, up or down. I don't have any fuel pump and I'm running stock injectors. When I installed a new gauge it was the B&M pressure gauge and it read the same PSI. When I removed the vacuum lines the car revved higher but the PSI stayed the same. I tried raising the PSI to see if the gauge changed and tried lowering it and the gauges didn't read. I took the pressure regulator apart and reinstalled it and the same problem happened. When I gave it less than half throttle the PSI dropped to 60. Here are some pictures of the setup... could it be possible that the fuel rail's diameter is too large?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Enig &raquo;</TD></TR><TR><TD CLASS="quote">... could it be possible that the fuel rail's diameter is too large?</TD></TR></TABLE>More likely the FPR is not working? I don't think the fuel rail can cause anything like that.

Check to see if there's any blockage of the fuel return line.


Modified by JimBlake at 9:48 AM 10/29/2004