A friend gave me a used f7 loco which he said ran fine when last used. It has all metal wheels, a can motor driving rear truck w/2 axles. It runs fine in a cradle no matter how power is applied. The powered truck turns over fine with one set of axles lifted off the track - doesn't matter which set, but not with all 4 axles on the track - no hum, no lights, no response to slight push. Any thoughts?

Are Bachmann steel and nickel silver EZ track the same code? Will they work together?