Fuel Injector

Multiport Sequential Fuel Injection (SFI) system uses one fuel injector per cylinder. Fuel injectors are fitted between pressurized fuel rail and intake manifold. Each injector contains a solenoid controlled by ECM. All 8 fuel injectors are supplied with battery voltage. ECM controls injector operation through ground path for each injector. When injector solenoid is energized, a plunger is attracted off its seat and allows pressurized fuel to spray into the intake manifold. Fuel injector total failure or a leak that causes a rich mixture will cause a misfire in effected cylinder.