Question 218Motor Plants - 1st Asst/Chief

The correct answer is C) Slow the engine allowing it to gradually cool. When a diesel engine is running at 20% overload with a smoky exhaust, the correct action is to gradually reduce the engine load and allow it to cool down. Immediately stopping the engine under these conditions could cause damage due to the high temperature and pressure. Increasing the lube oil pressure (B) or decreasing the cooling water temperature (D) would not address the root cause of the overload. Slowing the engine (C) allows the engine components to gradually cool and prevents sudden thermal shock that could lead to component failure.