Minor problems with LV TDCI Focus

[Franco Cozzo]

Hello guys, something I've noticed with my Focus.

When I fill her up, usually the fuel tank makes a psssh noise when you open the filler cap, but its not doing it anymore? Is the tank supposed to be pressurised?

My fuel usage seems to be up about .5L/100km according to the readout and I'm getting about 50km less out of the tank with the same driving and I feel like its down on power, it doesn't feel anywhere near as torquey as before.

Also the injector return line (clear plastic tube) the fuel looks this red tinge colour not the usual diesel green?

Car is showing no codes when I scanned it either.

Getting some odd little problems now.