Flow Diagram

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Step Timing Control (STC) Fuel System

1. Fuel rail pressure line
2. Injector
3. Injector fuel drain return
4. Fuel return to tank
5. Fuel inlet supply
6. Fuel filter
7. Gear pump cooling drain
8. Fuel pump
9. STC control valve
10. STC fuel pressure sensing line
11. Fuel crossover.

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CELECT™ and CELECT™ Plus Fuel System

1. Fuel gear pump
2. Fuel rail pressure line
3. Fuel crossover tubes
4. Injector
5. Injector fuel drain return
6. Cooling plate (behind ECM)
7. Fuel inlet supply
8. Fuel filter.

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CELECT™ and CELECT™ Plus Fuel Pump