Plot hole: When Duck and Diesel leave the shed, Diesel follows Duck instantly, but the tracks they are on both lead to the turntable. As they are on different tracks to each other, it would be impossible for Diesel to follow Duck that quickly as the turntable could only be set to one track at a time.
Thomas the Tank Engine & Friends (1984)
Episode list - season 7
Starring: Alec Baldwin, Michael Brandon, Ben Small, Martin Sherman, Michael Angelis
More mistakes in Thomas the Tank Engine & Friends
Duke: Excuse me. Are you a vandal? Driver told me vandals smash and break things.
Trivia: The events of this episode were remade in CGI for the 2015 special, The Adventure Begins.
Gordon Takes a Tumble - S6-E17
Question: How did they get Gordon's tender back on the tracks even though it was in a field very far from the rails?
Answer: Ropes and a winch.
Answer: Butch the breakdown truck must have pulled Gordon's tender all the way up the rails so the breakdown train can reach it and also Butch helped to get Gordon close to the winch.