New engine problem

Ok i just bought a used Prr engine (i will upload photos later) and it has a engin in it but it does not run so any ideas how to hix it.

Need more details, like light comes on, makes a humming sound etc.

Cuda Ken

We’ll also need to know what it is and who made it to give any real help. Giving tips for fixing an Athearn diesel won’t work on a broken Tyco steam engine.

Can you power the motor directly? Are the wheels dirty? Any broken wires? That’s about all I can think of for now.

Also is it DCC or DC, and what type of system are you running on your layout?