Hi guys urgent help needed.ive replaced my fuel tank and pump on my 2.7tdv6 06 with another from shop of ebay with pump.ive connected this to my car but was not sure which fuel pipe went to were on pump.ive got one blue cap and one yellow. I've put them on but I'm not getting any fuel coming through even though I can hear pump working also I put £20 of fuel in it but its showing nothing on gauge.