fuel pressure

2001 Lincoln LS6 3.0 Fuel system leak (both check engine & fuel cap light on) Question about this component [Vacuum valve pump] PN: XW4E-9C915-AB New fuel cap installed with no resolution to issue. Was suggested to check this component. Did some research only to find out this part comes up for...

So i have this 1999 Lincoln limosine that we put a external fueltank and pump in becaus the original one was leaking. But now it wont start only on brake cleaner we also have no fuel coming back from the injector rail is there some sort of cut of somewhere to the point of that the ecu wont send...