Contents: Removal procedure ↧ Installation procedure ↧
Removal procedure
Caution! The fuel system is under pressure. Before disconnecting the fuel lines, relieve the pressure in the fuel supply system to avoid fuel spillage and burns.
1. Relieve pressure in the fuel supply system. See "Relieving pressure in the fuel supply system" in this section.
2. Disconnect the negative battery cable.
3. Disconnect the intake air temperature (IAT) sensor connector.
4. Loosen the clamp and disconnect the air filter outlet hose from the resonator.
5. Loosen the clamp and remove the resonator from the electronic throttle body.
6. Remove the engine cover.
7. Disconnect the breather hose and the positive crankcase ventilation hose from the cylinder head cover.
8. Disconnect the fuel supply line from the fuel rail.
9. Connect the fuel injector connectors.
10. Remove the fuel rail mounting bolts.
Note: Before removal, the fuel rail assembly can be cleaned with an aerosol cleaner according to the instructions for use. Do not immerse the fuel rails in solvent. Remove the fuel rail carefully, avoiding damage to the electrical connectors and injector tips. Do not allow dirt or other contaminants to enter open pipes and channels. Fittings should be covered with caps and openings with plugs during maintenance.
Important: If the injector separates from the rail and remains in the cylinder head, replace the sealing ring and clamp.
11. Remove the fuel rail together with the attached injectors.
12. Remove the fuel injector mounting clamps.
13. Remove the fuel injectors by pulling them down and out.
14. Remove the fuel injector sealing rings.
Installation procedure
Important: Different injectors are calibrated for different fuel consumption. When ordering a new fuel injector, order only the identical unit according to the number on the old injector.
1. Lubricate the fuel injector sealing ring with engine oil. Install the sealing rings onto the fuel injectors.
2. Install the fuel injectors into the fuel rail sockets with the fuel injector terminals facing outward.
3. Install the fuel injector retaining clamps onto the fuel injector and onto the end of the fuel rail.
4. Make sure the clamps are parallel to the fuel injector harness connector.
5. Install the fuel rail onto the cylinder head.
6. Install the fuel rail retaining screws.
Tighten
Tighten the fuel rail locking screws to 25 Nm (18 ft·lbs).
7. Connect the fuel injector connectors. Rotate each fuel injector as needed.
8. Connect the fuel supply line to the fuel rail.
9. Install the resonator into the electronic throttle body.
10. Connect the air filter outlet hose to the resonator.
11. Connect the breather and positive crankcase ventilation hose to the cylinder head cover.
12. Connect the IAT sensor connector.
13. Install the engine cover.
14. Connect the negative battery cable.
15. Check the fuel rail and fuel injectors for leaks.
