I understand the frustration when stuff breaks. But assumptions are being made as to what's wrong without having the engines checked out. the shorted polar Express could be simple broken wire. No one will know until the engine is opened and inspected. as for the smoking diesels, if all your diesels fail to smoke after the initial fill, then it sounds like you may be doing something wrong. We need more I formation so we can help you. If you overfilled it, then it will not smoke.
Yes, lionel has made some mistakes but most of their stuff is reliable. I have engines from 1996 through current production. I've only made a few repairs to keep them running. All have been dependable. Friends I know who have mth have similar success.
The forum is a great place for help. Take a deep breath, give us more details and we can get you enjoying your trains again.
