Honorary steam locomotive

{
  "id": "MLC-T-IND-002873",
  "term": "Honorary steam locomotive",
  "field": "Industrial and trades",
  "definition": "A diesel locomotive that produces an excessive amount of dark exhaust smoke, giving it the appearance of a coal-burning steam engine. The term is a form of railroad slang used humorously or critically by crews to describe a locomotive with poor engine performance or incomplete combustion. This condition can result from issues like faulty fuel injectors or a clogged air filter, leading to a rich fuel-to-air mixture and visible particulate emissions.",
  "synonyms": [
    "honorary steam engine"
  ],
  "subject": "Shop talk and trade slang",
  "translations": {
    "de": "Ehrenlokomotive",
    "es": "locomotora de vapor honoraria",
    "fr": "locomotive à vapeur honoraire"
  },
  "url": "https://mlchart.com/terminology/industrial/honorary-steam-locomotive/"
}