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Sequential Port Fuel Injection (SFI)
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The engine offers patented sequential port fuel injection.
This system provides precision fuel control for optimal fuel distribution to each cylinder. One injector
per cylinder is used to deliver fuel through flexible fuel
transport tubes to the inlet port. The precise amount of
fuel is delivered to a fuel atomization nozzle at each cylinder
during each combustion cycle.
The precise control of fuel by the SFI system improves cold start, hot restart and fuel control at idle. This system helps the truck engine achieve its maximum power and torque in an efficient manner while improving fuel economy. Increased durability of the fuel atomization nozzles is achived by a compound installation angle and special coating on the nozzle. |
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*N-Series vehicles shown with optional chrome grille.