Question

A diesel engine has low power and low turbocharger boost pressure is found. Technician A says that a leaking exhaust manifold could be the cause. Technician B says that a plugged turbocharger oil return line could be the cause. Who is right?

(A) A only
(B) B only
(C) Both A and B
(D) Neither A nor B

Answer 1

Both Technician A and Technician B are partially correct. A leaking exhaust manifold and a plugged turbocharger oil return line can both cause low power and low turbocharger boost pressure in a diesel engine.

Step-by-step explanation:

Both Technician A and Technician B are partially correct. A leaking exhaust manifold can indeed lead to low power in a diesel engine. This is because a leaking exhaust manifold can cause a loss of exhaust gas pressure, resulting in low turbocharger boost pressure. On the other hand, a plugged turbocharger oil return line can also cause low turbocharger boost pressure, as it prevents the proper flow of oil back to the engine. So, the correct answer is (C) Both A and B.