Thomas & Friends (1984)

S2E12 Pop Goes the Diesel

Duck proudly brags about his Great Western heritage and his importance, irritating his friends. Soon after, the Fat Controller presents Diesel, a shunter who’s being evaluated. He requests Duck to guide Diesel, but Diesel confidently dismisses Duck’s help. Left on his own, Diesel soon finds himself in trouble with some trucks. After the mishap, he wrongly blames Duck for his predicament...