Wifes 1.9tdi ASV , was reporting fuel temp sensor out in fuel pump. So had this replaced by a diesel place. Now still no power and smokes loads. There is air in fuel line so replacing that. No codes reporting . dont think turbo is kicking in.( was replaced just over a year ago) I did play my my mates vcds and try block 11 to get the N75 to cycle but not sure what i should be looking at i had presumed when it clicks in to on the engine tone should change. but nothing readings all stay the same. Should i try replace the N75 Oh we have been running on bio for a bit prior thanks. Just called Audi for price on the fuel pipe. £86.15 WTF its 2 bits of plastic and rubber hose!!!!!