With the engine running, how is the PCM programmed to pulse the fuel injectors in a sequential fuel injection (SFI/SMPI) system?
A) Pulse all injectors simultaneously once each crankshaft revolution
B) Pulse one half of the injectors simultaneously on each crankshaft revolution
C) Pulse the injectors in pairs
D) Pulse the injectors individually in the engine's firing order

Question

Quizplus · Accepted Answer

In a Sequential Fuel Injection (SFI) or Sequential Multi-Port Injection (SMPI) system, the Powertrain Control Module (PCM) is programmed to pulse the fuel injectors individually in the engine's firing order. This allows for more precise fuel delivery and timing, improving engine efficiency and performance.

With the Engine Running, How Is the PCM Programmed to Pulse