Can anyone tell me what could be wrong with my daughter's 1996 Ford Telstar TX5?

We had it serviced and took it to an auto electrician and they told me it was the ignition leads. However, after having the ingition leads replaced the car still breaks down every so often. I can drive the car and then it just dies without warning, I pull over and try to start it again a few minutes later and it starts and drives good again. Some say it's the distributor and others say it's possibly the fuel filter. If anyone can give me an idea as to what could be wrong it would be very much appreciated.