Exam Question

Following a recent turbocharger (T/C) overhaul, it has been observed that the scavenge air pressure is lower than before, and the engine power output has also been reduced.

(a) State the possible causes of the problem with reasons. (5)

(b) State the engine operational information that should be gathered to detect the possible causes of the problem, along with reasons for each type of information. (5)

(c) State the instructions which should be issued with respect to future T/C overhauls in order to prevent similar incidents. (6)