 I bought my Sentra 1.8 about a year ago, bought at 58k miles and now at 70k, starting to notice hard start up and a drop in gas mileage. On ave I was getting 30mi to a gallon and now about 25-28mi to a gallon. Now going on the hunt to figure out if the fuel pump that everyone seems to be having issue with is the problem or something else. Going to start cheap and work my way to pump. Mechanic friend thinking it could be fuel filter or air/fuel sensor. So going to check those first then do pump. Hope this will be the end to my problems for awhile. The only other problem is with my six cd changer likes to skip and not play cd's even ones that are new. but that is least my worries. 