Sorry about the delay in responding, but thankyou for those pictures. I think I have a different engine... it certainly looks different:
Close up of drivers side of engine:
All the tubes I can reach seem to be fine. I am thinking I may have an engine mount problem, as a post much earlier in this thread mentioned. The engine is running fine, just an excessive amount of vibration -- at least what I think is much more vibration than when we bought it 3 years ago. I had a friend put a scanner on the car, and no codes came up. I will keep looking...