06 PT CRUISER CHRYSLER

It was running fine tried to start it, it would not start all it would do is turn over and over. My buddy said it probably fuel pump he took air filter cover off and sprayed starter fluid in it almost started he said yep, so is it or could it be something ¬†else he said he could not hear the pump when I turned the key on but I never could even when it did run. I don’t know what do