I have a nice pre-war lionel 248. I cleaned it up and it ran great. It has been sitting around for a year and when I put it on the track..it ran but sort of ...stop and go. It doesn't run smooth...it goes then slows then goes then slows.
I assumeI need to clean something...but does anyone know what I should focus on and what to look for?
I am just beginning to work on trains, so I don't have a lot of experience and I appreciate your help.
Thanks
Ron