Hi G
It is a brand new Railking FEF northern steam loco, and I am using DCS. I have tried a factory reset, but still the same. The smoke motor sound started the moment I initially powered the track to programme it into the DCS, and has not stopped at all whilst on powered track.
I realise the thing to do would be return to shop it was purchased from, but I live in England and it is from a store in the US, so if you can offer any idea's it would help please.