Technician A says that in an ISX engine using HPI-TP injectors, one metering actuator is responsible for fueling the front three cylinders and another for the rear three. Technician B says that on the same engine, one timing actuator manages timing on cylinders #2 and #5. Who is correct?

Question

Quizplus · Accepted Answer

Technician A is correct because in an ISX engine with HPI-TP (High Pressure Injection - Time Pressure) injectors, there are indeed two metering actuators, with one responsible for fueling the front three cylinders and the other for the rear three. This setup allows for precise control of fuel delivery to each cylinder group. Technician B's statement is incorrect because the timing actuator does not manage timing on specific cylinders in such a direct manner; timing is controlled more holistically for the engine's operation.

Technician a Says That in an ISX Engine Using HPI-TP