gas

I am replacing all of my door skins...........NEED Help with insight swapping out my lock in lower drivers door that controls switches for fuel door & trunk. Have found several helpful D.I.Y.'s for the skins but none cover this lock cylinder. Would be very appreciative as to help........

I need some help. (03 passat 2.8l 30V) I just did a full timing belt job and replaced everything along with the cam chain tensioner gasket, seals, and even spark plugs. All the timing markes were dead on and now I am getting poor gas mileage. I mean it is alittle over 16mpg now and it was 22...