In my experience with antique pipes you are best to replace what you can with either copper (3/4" at the feeder that comes into the house) and branch off with 1/2" copper to the end devices. Many people ask about plastic piping such as Pex. You will need to do some research on pricing, tools...
To the right person it may be worth a few bucks, but the key is finding that one person! I would check online auction sites like EBay or Kijiji or something local to see if there is a market for something like this. I have an old stove/oven that was my grandparents too and haven't had the time...
It is possible that if the dishwasher is draining into the disposal that the drain line connection is too small where the dishwasher pipe hooks into the disposal connection, you could run the drain cycle into a five gallon bucket for a test, and if that doesn't solve the problem I would check...
I began my career being born into a blue collar family in Western Iowa in 1976 working alongside my father and electrician and my Uncle the plumber, HVAC business owners. My education in these fields started with these two guys and has continued for more than thirty years. I've worked on...
You can have your gas supplier check the incoming pressure first, be that natural or LP to see if a regulator is sticking, then if that checks out you should have your home gas system checked out by a professional. There may be a restriction somewhere in the supply piping or a valve problem...