I own a ford festiva 1992 model, the car has been very reliable. just yesterday I notice a knocking noise that seems to come when turning the steering wheel from left to right even if the car is stationary. The nocking nise is louder if someone is seated in the car. Note: I had both front wheel ball joints replaced approx 2 years ago. Any assistance in pointing out what the probelm could be would be greatly appreciated.

Wheel bearing, steering tie rod ends, steering rack or maybe but not likely a bad cv axel, only a few possiblities, i had this exact model car for few years and anyone should be able to figure it out if you take your time and jack car up or drive on ramp and have a friend turn steering wheels left and right till you find the noise, good luck

You should have your upper strut mounts and tie rod ends checked out. Many times when your ball joints wear out these parts are not to far behind them and can be in need of replacement. It would be a good idea to have the front end inspected, because the problem could be a safety issue. Some shops will give you a free estimate, in hopes of getting the repair job. I would use a shop that does front end alignment they will often offer better prices, and they tend to specialize in front end repairs. Good luck with it.