1998 Ford Contour engine problem

Engine Mechanical problem
1998 Ford Contour 90,000 miles

my daughter gave me this car after having a problem with the valves and having it repaired then a few days later it happened again. She didn't want to deal with it after that. One day she went out and her car wouldn't start. A man looked at it and said all the valves were on the same side. He put new springs in it and it ran real good for few days. Then one day it wouldn't start again. When the guy came back to look at it, he said that it was the same, all the valves were stuck on the same side. He couldn't figure it out and said he was going to talk to another mechanic and get back to her. He hasn't yet. It has been awhile. Now I need to find a way to fix it but everyone I talk to says they have no idea what it is. I am disabled and need a car to go to the doctor and to do my monthly things, and this would be a nice car for that, do you have any idea what it is? Could someone do anything to a car to cause this? Please help me to find out what to do with this car. Thank you donna delgado