The car developed irratic power, surged some and then would run fine. We'd had wet weather, so I advised her to spray the wires with WD-40 to see if it improved the running. It did not. The irratic power and surges continued for about a week, then it would not start at all. I'm very surprised to not be getting any fuel. I have not checked the installation of the filter, but her step-dad is fairly mechanical and I am trusting he installed it correctly. When I watch the throat of the throttle body, I can see a very slight mist, but it is rare. As I said, the thing tries to fire, or at least sounds like it, but only hits one cylinder, and even this is rare. I'll check the spark in the morning, but I still don't understand what could be stopping the fuel. I'll also install a new filter myself, for good measure and confidence.