I bought some new Lionel 6-81510 Erie FA-2 AA sets on Ebay from an associate of a dealer selling the dealers out-of-warranty trains. The engines smoked for two to ten minutes and slowly stopped all smoke production. Ouch!
With no assurances that these brand new sealed-in-the-factory-carton engines would be serviced by Lionel Service, I began exploring my own fix.
The smoke units were easy to fix. The wick packing that contacts the heating element contracted into a smaller size over time in storage, not touching the bottom of the smoke fluid reservoir. After removing the wick/packing, I carefully pulled it further apart, letting air spaces form between the material as I stretched it out without breaking it apart.
The wick packing now touches the bottom of the smoke fluid reservoir/container and pushes up against the heating element in the top. (If I need to do this again in the future, I will buy new packing from Lionel.) I removed any old burned debris from the heating coil.
After repairing four Erie FA-2 and one FB-2, I have five new Erie engines that can fog my basement. The engines now produce a nice stream of smoke exhaust on the LOW setting.
I also swapped the shells on the second AA set, giving me a #736D with motors, sound and smoke to run with the other powered #736A from the first set. With two powered with sound A units at opposite ends of the powered (but no sound) FB-2 unit, I get a nice rumbling consist to pull my 40-car freight train around the layout.
I am spoiled by my Atlas O Powered B-units that have sound in them. A consist of Atlas O powered engines lets you know the train is headed your way. The horn and bell come from the lead engine, but diesel sounds come from the motorized B-units too as they pull the cars.
If you have have questions, please ask. If you have comments, please post. I don't know what I am doing all the time, but I know it won't get done unless I do it.
Sincerely, John Rowlen