Question 147Motor Plants - 1st Asst/Chief

The correct answer is B) injection pump fuel rack binding or sticking. Diesel engine surging can be caused by issues with the fuel injection system, and a binding or sticking fuel rack on the injection pump is a common cause. The fuel rack controls the amount of fuel delivered to the engine, and if it is not operating properly, it can lead to fluctuations in the fuel supply and cause the engine to surge. The other options are incorrect because low compression (A) would not directly cause surging, a solenoid stuck open (C) would not impact the fuel system, and high fuel booster pump pressure (D) would more likely result in other issues like injector leakage rather than surging.