93 protege won't start
 

Turns over fine, just won't fire off. Worked fine in the morning, wouldn't start in the afternoon. There were no problems leading up to this.

check/replace gas??

Plenty of gas. Is my next step the fuel filter or injectors? Where is the fuel filter?

we need about 500% more information on the car and it's maintenance history.

You can't properly diagnose a vehicle on so little information.

No fuel pressure. it might be bad fuel pump relay. Can you hear the pump running? or no ignition spark, - it could be a bad coil. DME problem or bad arm. try also looking at dirty connections, clean everything. - this are the most common reasons why car won't start. give us an update of what other things did you notice...

Replaced fuel filter; fuel pump works okay. I was thinking about the coil. Guess that's next on the list.

Maintenance: My dad had the car, was careful to maintain it. My nephew had it for a couple years after that, don't know how that went (but I can imagine--probably not too well). The car has 175,000 miles on it.

Thanks for the input, everyone. I'm sure I'll be back. I'm not much of a mechanic, but I have more time than money.

probably want to check to make shure there are no vacuume leaks and the afm is plugged in.