Technician A says a Central Multiport Fuel Injection (CMFI) system pulses all injectors simultaneously. Technician B says a sequential fuel injection (SFI) system pulses each injector individually. 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 in a Central Multiport Fuel Injection system, all injectors are pulsed simultaneously, providing a spray of fuel to each intake port at the same time. Technician B is also correct because a Sequential Fuel Injection system pulses each injector individually, in sequence with the engine's firing order, allowing for more precise fuel delivery.

Technician a Says a Central Multiport Fuel Injection (CMFI) System