MTH Premier NYC Mohawk anemic smoke issue

any thoughts?

I would see how easy the fan motor spins ? and then oil the motor shafts? maybe the fan is pushed onto the motor to far? 

Clem 

It could be possible that the fan blades are slipping on the motor shaft.  This would cause the fan to not push enough at slow speed and work okay at higher speeds.  Drop the fan section off of the smoke unit, use needle nose pliers to gently pull the fan blades free from inside the chamber, and clean any smoke fluid residue you see on the shaft/chamber/blades with a paper towel.  Put an extremely tiny drop of super glue on the hole where the motor shaft goes in the fan blades and put it back in place on the shaft.  Lastly, wait a few minutes for it to dry.  Reassemble the smoke unit and engine.  Most likely, your issue will be fixed.

I assume you are running conventional. Your engine is a 2009 PS2?

Other than the usual checks on the system, you could try the diode trick. It works for older engines,but I never tried it in an MTH engine with cruise control. I have done it with Lionel engines with cruise with no ill effects.

LINK

Pretty crowded in there,you can try this at your own risk.

Dale H

Make sure that the wick isn't blocking the hole between the smoke unit's compartments.

mountain482 had it right on.

The fan was very loose on the motor shaft--so loose that I could shake it off. It was also pushed way down where it might have been rubbing against the fan motor mounting screws at the bottom of the fan assembly.

So I followed mountain482's advise. Cleaned the fan housing. Soaked the fan in 91% iso propyl alcohol to remove any oil/grease. After drying in the sun for a while, I used a toothpick to force a small drop of Krazy Glue in the bottom fan hole. Then I re-assembled the fan onto the shaft (with the motor on top to keep any excess glue from entering the motor bearing.) I made sue that the fan just cleared the top of the housing so that it would not rub on the fan motor mounting screws in the bottom of the assembly.

I also slightly enlarged the fan input hole to let more air in.

It now works like a charm.

Thanks to mountain482 and the OGR Forum. I suspected that this was the problem--but it helped to have someone else suggest the same solution.

This can be the #1 issue.  For your symptoms.  Glad you got it.  G

I'm glad you were able to fix it.