Fuel Rail: Service and Repair

CAUTION: Observe all fire hazard precautions detailed in FUEL SYSTEMS / SERVICE PRECAUTIONS, when working on open fuel systems.
Fuel system MUST be depressurized before disconnecting any fueling component.

1. Depressurize fuel system. Fuel Pressure Release

Fuel Hose Connection:

2. Place shop towel under hose connection, disconnect fuel feed line from fuel rail, discard seal, and fit protective plugs to line and rail.
3. Disconnect fuel return line mounting bracket from 'B' bank cam cover.
4. Remove breather pipes from intake manifold connections.

Throttle Linkage:

5. Remove throttle cable from throttle pedestal.
6. Remove throttle linkage rods.
7. Remove pedestal securing bolt and remove throttle return spring bracket.
8. Disconnect vacuum hose from front of cruise control actuator.
9. Disconnect connector from thermal switch on underside of fuel rail.

Fuel Return Pipe:

10. Disconnect vacuum hose from base of pressure regulator.
11. Place shop towel under hose connection, disconnect fuel return line from fuel pressure regulator, discard seal, and fit protective plugs to line and regulator.

Connectors:

12. Disconnect injector harness connectors. Note position of each connector.

Fuel Rail:

13. Remove nuts securing fuel rail to intake manifolds and remove rail.
14. Reverse steps to refit.
15. Be sure to use new injector seals and lubricate them before installation.
16. Readjust throttle cable.
17. Check for fuel leaks.