I have a very nice Lionel Postwar 646 Steam Engine. It was creating plenty of smoke using traditional smoke pills, but it was not puffing smoke when running like it usually does.
I think I made a mistake. I took a small screwdriver, gently prodded inside the smoke stack with the power on and the engine in neutral, and then saw a tiny flash. After that, the locomotive stopped creating any smoke.
Did I short out the smoke unit? If so, is it possible to fix that smoke unit or should I have a new smoke unit installed in the locomotive?