Why is a 1993 Ford Festiva cutting out?

Answer 1

Mine was doing that and I just replaced the fuel filter. I'd say try that...

If that didn't work, it could be a number of other things. Here is something to check. I had a problem with mine where it idled fine, but every time I accelerated it cut out and/or sputtered. Once I reached cruising speed it ran fine again. I chased it for months as it got worse and worse until I couldn't drive it any more. I finally discovered that the flexible tube that connects the air cleaner to the intake plenum had cracks in it from deterioration. They weren't noticeable until the engine rocked, as it does under acceleration. I cleaned the tube up and applied RTV to the cracks. I haven't had any problems since.