The fuel pump on my 99 1.8 freelander has become very noisey so i got another off find a part and popped it in this weekend.The petrol in the pump and filter that i took out was black in colour so much so that its almost too dark to see through.After a half hour test drive the car seemed to die on me,it ticked over but wouldnt rev.I switched off,waited two mins and off we went.Any ideas,? whats the black,? do i have a blockage,? any help would be most welcome.