Well, here's the parts page for that engine. https://www.lionelsupport.com/...amp;CFTOKEN=52919549
It still has a direction lock switch and a smoke on/off switch. Located just under the cab/firebox area. Given the user seems to have it locked in reverse, they likely haven't given it enough power for the smoke to properly work or have the smoke and direction lock switches confused- and since the manual doesn't give a picture, well, that's not a completely unsurprising mistake one would make.
Second issue- sound. Might be the transformer to track wiring, but also could just be track voltage because the engine is locked in reverse, so they aren't going with a lot of throttle, so then the whistle might not trigger. Also, could be this is the can motor style whistle, thus an electronic whistle board, and given the age of the motor and so forth, might have that whistle control PCB with a resistor current limiting the motor, and since the motor might need more current to spin up, well that explains not as responsive or loud as they remembered. Lionel parts does not show me the exact tender for this engine but apparently since several Hudson Jr. engine were made for various special road names, I'm confident this is at least a representative example of what to expect inside that air whistle tender. https://www.lionelsupport.com/...1b-82c4-557661854110
In fairness, given this is that standard reverse board, I've seen my fair share of ones with a blown BJT pair, and they do only go in one direction and may do so slowly because the other now dead pair is shorting the output slightly. Another topic for another day but a self destructive circuit where the motor draws a little more current due to age, load, and lack of lube, that in turn heats the transistors, they go into self destruct thermal runaway. and, given nature- happens to the forward direction pair.
