Technician A says that whenever an E3 injector is changed out, it is important to drain the EUI fuel supply gallery prior to removing the injector. Technician B says that when one E3 injector is changed out, the calibration codes of the unchanged five injectors must be reprogrammed.. Who is correct?
A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

Technician A is correct because draining the EUI (Electronically Unit Injected) fuel supply gallery before removing an injector is important to prevent fuel spillage and potential contamination. Technician B is incorrect because only the calibration code of the replaced injector needs to be programmed into the engine control module (ECM); the unchanged injectors do not require reprogramming.

Technician a Says That Whenever an E3 Injector Is Changed