Vehicle will not start

Yes, it is in the fuel tank mounted with the fuel pump. Generally not replaced until fuel pump fails.

disconnect the fuel line at the fuel filter or the fuel rail which ever is easier to get too, then try to start the car if it sprays fuel it is not the pump if it does not then you know it is the pump.

It could be a number of things. Have you tried to run any codes yet?

Sounds like the fuel pump is bad.... I would have the codes read and start there... but my imediate suspicions are the fuel pump.

suspect the fuel pump...
try spraying the throttle body with carb cleaner during the concern
if vehicle starts then begin the fuel pump diagnoses

before you spend a fortune on unwanted parts ask a local mechanic to have a look and see what they say

Spray some starting fluid into the airbox where the air hose goes into the injector. You only need a one second squirt, if it starts then shuts off, it's your fuel pump, or a clogged filter. If it doesn't start, pull a spark plug wire and put a screwdriver in the end and set it a couple millimeters from the engine block or a body panel. DO NOT TOUCH IT WHILE THE STARTER IS BEING TURNED! Have someone turn the starter and see if a spark jumps across to the engine or body panel. If there is no spark jumping then your problem is most likely the ignition module, but could be a host of things in this world of computer driven cars. Hopefully it's an easy fix like the fuel filter. Good luck.

I had that exact problem on my 03 sentra gxe 1.8L , turned out to be the alternator had died and it was trying to use the battery. Are you having any electrical problems? Because when this was going on with me, the lights would barely work inside and outside the car - new alternator and battery and its been fine ever since

The pump does have a filter on it but you should also have an inline fuel filter somewhere underneath your car, Check the pump when you turn the ignition key on the pump should run for a second or two then shut off if you can hear it , it is working. It is rare for a vechicle not to have an inline fuel filter but there are some models that don't have one. The filters on the pumps usually don't stop up that often,it's pretty rare.I would try to replace the inline filter call and ask your local part store if they have one for it and you will know for sure. And usually if the crank sensor is bad it won't crank at all.

it is located above the fuse panel under the dash left of the steering wheel. Sorry I cant remember its color. Hope it helps