Quote from: sandman8355 on July 02, 2018, 02:37:27 PMIt is possible that the smoke unit is broken or not functioning properly. Generally though you need to run the locomotive at three quarters throttle to get it warmed up, and you probably need to maintain at least half throttle to maintain an appreciable amount of smoke, and less and the smoke you would get would be negligible to non-existent.
Any secret to getting the smoke to work on the U.S.R.A. 0-6-0 in HO gauge?
Basically though my only advice is to run it full speed and if that doesn't work it probably is broken or toggled off as mentioned by Yardmaster.
As an aside, one reason many are weary of using smoke is that you likely will have to clean the film/residue off the track frequently to maintain good conductivity.