Fuel pressure problems

[sik sv]

My SV89 is starving for fuel and the problem seems to be getting worst, it has a long range tank and twin fuel pumps I have replaced both pumps the strainer, the filter and all of the fuel lines in the rear end. Anyone got any ideas on what else can cause low fuel pressure on the 5.0 cause I've got nothing.

[yosy]

injector filters may be blocked or a blockage further up the lines
you may of disturbed some dirt n flakes when you did the pumps lines and filters

[Dezza]

fuel regulator? i dont know if the 5 lts have them but try that as well