[partsbob67]

thanks for all the responses. was an aeromotive 750 pump and an Mallory regulator on a 94-95 fuel rail. changed to a aeromotive regulator on the rails. then changed to 87-93 rails and a aeromotive reg on that. fuel pressure starts at 40psi and drops to 36psi. then I put a holley pump on it and it did the same thing. voltage is steady at the pump. pump is mounted right below the cell. maybe to large a return line?