141. The main engines on your offshore supply vessel utilize a starting system similar to that shown in the illustration. When starting the engine, an excessive amount of oil mist exits the air starter exhaust port. Which of the listed conditions would account for this

An excessively open in-line lubricator needle valve introduces too much oil into the air stream, resulting in an excessive oil mist exiting the air starter exhaust port. This occurs because the air starting motor cannot retain all the introduced oil, and the excess is expelled as mist.