Hulkson

Hello everyone, I checked the fuses and all are ok.changed the temp sensor and the car is the same. Fuel filter gave me lots of problems this summer and the car was stopping constantly and after change the filter the car never stopped anymore however it does a ZZZZ sound sometimes. Now I think either the filter return valve is not sealing and air is getting in or like Rich mentions issues with the pump. Thank you for all replys and ideas

Hello everyone, Im a newby here and before the post would like to thank you for the forum. Hi, have VW lupo 1.4 tdi AMF and the car doesnt want to start in the morning also don't hear the sound of diesel when turning the key as before. I cranck the engine and always after around 10 seconds the engine start and runs normal during all day. next day in the morning same story...prb started 3 weeks ago. It feels like there is no fuel pressure during the first crank of the day. Have other issues with the car but not sure if their connect with this morning start. Anyone with sames problems? Thanks a lot!