Step 3 » GENERAL learning environment Category C (C, C1)

GENERAL Learning Environment Category C (C, C1)
Question 66 of 533

Which of the following failures of the fuel supply system of the compression‑ignition engine is manifested by the fact that the engine runs irregularly, “knocks” and emits a lot of smoke?

A loosening of the high‑pressure pipe nuts;
B wear of the injectors;
C breaking of the pressure‑adjustment spring for injection.
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Explanation

When the engine runs irregularly, “knocks” and emits a lot of smoke, it means that the injectors are worn. The correct answer is B.

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