I am troubleshooting a Lionel #243 locomotive which I purchased on Ebay. (The original locomotive was stolen my basement when I was a teenager and the remainder of the set has been in storage since that time. I recently decided to resurrect it so that my 3 year grandchild could enjoy it). I did some maintenance and repairs on the original tender which needed to be rewired and although I had not used a soldering iron since shop class in junior high school, I managed to get in working order. The newly acquired locomotive works well except for the smoking mechanism. It worked for a little while after I received it, but then stopped except for an occasionally small wisp of smoke. I took the locomotive cover off the frame (see photo) and all the wiring seemed fine. I am wondering if there is anything that I can do to bring it back to life again or will it need a new unit? According to what I’ve read, the 243 was only available in 1960 and is identical to the 244. I’ve got the Repair and Operating Guide of Lionel Trains, but the model is not very well described in the book and I’m not sure how to go about fixing the smoke mechanism.