Lionel g gauge wont run on track

Check the motor and clean all the drive of grease

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Lionel Wheel Issues - Classic Toy Trains Magazine

trains.com https://cs.trains.com > ctt
If it goes on crooked, you may not be able to restart the wheel straight if the axle splines have cut into the wheel crooked. A new wheel may be needed again. ..

Hi,

Please make sure that the wireless controlloer power switch is set to "on." Please also give the train a new command. If it does not start to run, either your engine or remote need repair and you would need to reach out to Lionel by calling 1 (586) 949-4100.

Thank you.

Sounds like a track connection not completely together. Put a meter on various points on the track to find where it is not completing the circuit.

I would contact Lionel and see if they can assist, especially as it sounds that it may still be under warranty?
Contact Lionel Trains

see pages 44 & 45 of attached pdf to figure out your power requirements for all locomotives, lamps/light bulbs & accessories.
compare total needed to power output of your transformer, if total is less that output of transformer, clean wheels, roller pickups & track.
if total is greater than output of transformer, you need more power/larger output transformer. lean wheels, roller pickups track.
http://www.slsprr.net/history/1954LionelTrainsAccess.pdf

Contact Lionel Customer Service:
1-586-949-4100

First, check to make certain that the batteries in the remote are good.
Second, if the train has been running and the problem is new, clean your wheels and pick up roller on the locomotive, then clean the track.
Make certain that when you use the remote, you orient the antenna in an upright position and are within 6 to 8 feet of the locomotive.
If none of the above helps, contact the Lionel Service Department.
586-949-4100

1: clean & lubricate your engine2: if that does not work, the wheels may be out of quarter,check with Lionel Parts & Services.
http://www.lionel.com/ContactUs/

Check to see if the train is lifting off the track on the curve and the roller is not making contact with the center rail. Run the engine alone slowly and try both forward and backward.

The magnet may not have enough punch using track power. Recommend you use an aux power source fixed 10 to 13VAC supply and not track power. There may also be a slight + difference between the track magnet head and the plate on the coal car so that there is insufficient force to release the dump mechanism.