96 Ford Contour, car turns over but will not start
Hello all, I am having a bit of car trouble and was hoping to get some advice. My car is a Ford Contour 96 model, with a v4 engine and automatic transmission. The problem I am having as the title states, it will not start. It is a used car that I have owned for 3 years now, and it started at about 96,000 miles. It is currently at 126,000 miles, and over the years has had an oil change every 3,000 miles, and is currently up to date. In this time I have never had a tune up done, meaning no new fuel filter, spark plugs, etc, or had a new timing belt put in.
Basically, when the problem occurred it was suggested to me that I get a new battery, as that had never been changed either. Even tho the lights still functioned, and the car turned over, I replaced the battery. Successfully installed, but to no avail with my current problem. I am coming here for suggestions on what step to take next, as my budget is limited, and I cannot afford to have it towed to an auto shop, and have them do the work. My question would be, with the current information, what step should I take next? I have about 100 dollars to work with, so I am hoping for some insight on what might be the smartest move to make, as I cannot afford to waste too much money with trial and error. Thank you.