First off don't run the old rig off old gas in the tank, old gas will cause varnish to form on the valves and cause further valve sticking. Make sure the tank and fuel lines are clean before you run it off the tank old gas and crud from a dirty tank can cause a lot of problems such as stuck valves. After the fuel system has been cleared you can start on the ignition problems such as points cap plugs and pug wires. I've started many old trucks after long naps and these things need to be addressed before you can have a successful start and run.
