It might be a cracked gear. They will tend to slip on the axle and cause a loss of power and traction. A drop of super glue (ACC) in the crack will usually fix it but you’ll probably have to disassemble the locomotive and get the drive axle out to avoid the likelihood of getting glue in the motor or other unwanted areas.
Trackmaster 2 track takes a lot of hits around here but generally, I don’t have trouble running Plarail and Trackmaster 1 engines on it. The major disadvantage is that things like stop tracks and some special features don’t work with those trains.
Trackmaster 2 track takes a lot of hits around here but generally, I don’t have trouble running Plarail and Trackmaster 1 engines on it. The major disadvantage is that things like stop tracks and some special features don’t work with those trains.