[Oceangirl]

Hi, Please forgive me if there is a thread that answers this.
Also I am a woman and i dont know much lol. And i dont have much help to rely on.
Here is my problem, I went out of my van 4 weeks ago and the van would only crank and run a few seconds at a low rate.
I changed the plugs, fuel filter, air filter, and fuel pump relay.
The fuel pump does make a noise when key is turned.
Under the hood, gas comes out of the( "pressure valve"?).
When starter fluid is sprayed onto the filter the van will run stronger for a little longer and then turn off.
I have called several mechanics and have been told the fuel pump is working if i hear the noise. I cant afford a tow to get it fixed. But i do have the fuel pump incase i have to replace. But i dont know how to drop the gas tank safely.
So if anyone here can tell me what else to try please let me know. Or if you think is is really the fuel pump gone bad. Something is keeping it from getting gas.
If you need more info on something that may be important, i will do the best i can to let you know.
Thank you for your time.