I installed a holley stealthram. I hooked my fuel lines up today, and decided to do a leak test. no leaks. I unhooked the pressure side to make sure gas was going through. Plenty of gas was going to the rails. Gas was in the rails and pressurized, as I opened a shrader valve and lots of gas spewed out. However, when I unhook my return line, no gas comes out. This was all done without cranking the engine over, just turning accessories on. The return line is hooked up to the fuel pressure regulator. Is there something wrong with my fuel pressure regulator and that's why no fuel is coming out? I turned the screw on the back, I screwed it in (tighten) and I had no change. Fuel is supposed to go through the return line, right? I'm just stumped

Ryan

 

Hook up a fuel pressure gauge and see how much pressure your pump's generating.

If the pump can't make more pressure than the regulator is set to, exactly what you described will happen.