Technician A says that injection lag or delay is the time between the start of injection pressurization and the point when fuel is actually being delivered. Technician B says that the needle lift sensor provides an electrical signal to the electronic control module (ECM) that indicates nozzle-valve movement. Who is right?

Question

Quizplus · Accepted Answer

Injection lag or delay is indeed the time between the start of injection pressurization and the point when fuel is actually delivered, as Technician A states. Technician B is also correct in stating that the needle lift sensor provides an electrical signal to the ECM indicating nozzle-valve movement.

Technician a Says That Injection Lag or Delay Is the Time