Fizzling Fireboxes! Thomas thought he could prove Diesel wrong by pulling the Troublesome Trucks without a back engine. Subscribe for new fun, songs, and .\rbr\rbrFizzling Fireboxes! Thomas thought he could prove Diesel wrong by pulling the Troublesome Trucks without a back engine. Subscribe for new fun, songs, and .\rbr\rbrThe Official Thomas & Friends UK YouTube Channel Join Thomas, James, Percy, Emily and all of your favorite engine friends as they embark upon endless .