automass

I bought this car few days ago..car had it's service which was just the Oil, Oil filter and also Air filter change by the company who acquired it. they didnt change Diesel filter and cabin filter. So I have decided to change them myself which i did. I bought UFI 2603800 Fuel Filte from eurocarparts and today when i was driving i realise that it was consuming 3time highrer than normal. did i do anything wrong. I have just seen the video and found it easy to do it myself. did i miss anything!