Trying again. Trains do not work perfectly out of the box or from storage. The rails should be cleaned. An eraser will work. Scotcbrite or fine sandpaper for older track. Try running the engine back and forth until the connections improve. If the enigines squeals try a little oil. For dead spots on the track you will need to tighten the track pins. Just running it will help at this point. Post a picture and we may be able to give you more information on your engine.