Where is the fuel filter and fuel pump located on a 1997 Nissan sentra and how do you change them?

My car smells like gas all the time. Someone told me that it could either be a clogged fuel filter or a malfunctioning fuel pump or a malfunctioning fuel injector. I want that horrible smell gone so i want to replace these two parts first and see if it helps! ThanksWhere is the fuel filter and fuel pump located on a 1997 Nissan sentra and how do you change them?
The easiest way to find a fuel leak in any car is to run over a bunch of lit road flares. Good luck!

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