Where is the fuel filter located in a 2004 nissan sentra se-r spec v? My car doesn't start....it cranks over just fine, and the battery, alternator and spark plugs are good, and the fuel pump turns on...i'm thinking that it may be a logged fuel filter, but just don't know where it is located.

It is not a problem of sensor as it is not showing any dashboard light, neither it seems to be a problem of battery as battery gets charged after driving if the alternator is working fine or otherwise it won't start at all after overnight standing. It could be a problem of starter solenoid as it has copper windings and when the copper winding gets old it functions intermittently. I am sharing a video that will explain it better.

It could be the fuel system.
It could either flooding or starving for fuel.
If injectors are fouled badly it will wet the plugs and not fire.
If plugs are pitted that makes it easier to flood. (check plug tip condition, check all plug wires and boots are good)

If it is starving -- fuel pump weak (going to fail).
Need to test fuel pump pressure.

MIGHT BE A RELAY ! LOCATED UNDER HOOD, YOU SHOULD SEE RELAY BOX NEXT TO BATTERY. MAKE SURE BATTERY TERMINALS ARE CLEANED, PUT SOME VASOLINE ON TERMINALS, RECONNECT, TIGHTEN. CHECK ALL GROUND WIRES. ARELAY BOX MAY ALSO BE LOCATED NEXT TO POWER STEERING . COULD HAVE A FAULTY SOLONOID@ STARTER, IGNITION SWITCH COULD ALSO BE FAULTY, ITS NEVER EASY TO PINPOINT ELECTRICAL PROBLEMS, PROCESS OF ALIMINATION, CHECK ALL STARTING CIRCUIT SYSTEMS, IS YOUR SHIFT LEVER ALL THE WAY IN PARK ? DOES ENGINE CRANK ? OR DEAD, NO POWER ? ARE YOU GETTING SPARK ? HOW ABOUT FUEL ? DID YOU REPLACE BOTH THE AIR &FUEL FILTERS ? THE STARTER / SOLONOID IS WHAT CRANKS THE ENGINE, I THINK YOUR PROBLEM IS THERE ! REPLACE RELAY TO STARTING SYSTEM, ARE YOUR SPARK PLUG WIRES NEW ! THEY WILL SHORT OUT ANY SPARK IF OLD, DIRTY, I SUGGEST A TUNEUP, NEW FILTERS, AND REPLACE STARTER/SOLONOID !!!!!!

Sounds like a fuel supply problem. The fact that it does momentarily start, indicates its not an electrical issue. However, no steady fuel supply to the injectors and it won't run for more than a second or tow. Your problem is in the fuel delivery system most likely. Either the pump, or (if the unit is located in the fuel tank) the fuel filter may have ruptured. That would sent all the fuel back to the fuel tank not to the injectors.

check your fuel filter and changing the plugs couldnt hurt. make sure you use ngk or nd plugs for this. i am a big proponent of manufacturer parts. they were designed for the vehicle.

lOOK BEHIND THE GLOVE COMPARTMENT. Compartmet is probabily plastic and all you have to do is push in real hard to get them past dash board.

You need a new fuel pressure regulator, located inside of the gas tank built into the fuel pump assembly.

You have 2 Problems, First problem batteries dying you have to make sure connections secure and alternator is charging your batteries (go to an Autozone or Discount advanced they will tell you). The Sputtering is either a bad SPARK PLUG or a damaged Cable going to the spark plug..Change them every 2 years.

try replacing the crankshaft and camshaft sensers, my 2004 sentra spec v had the same problem.It cost me $122 for both the sensers and can be done in 20mins

Change fuel filter and fuel lines that are leaking. Starting needs fuel pressure.