Fuel Injector: Service and Repair
FUEL INJECTORS AND FUEL RAIL REPLACEMENT PROCEDUREREMOVE OR DISCONNECT
1. Throttle body. Refer to Throttle Body Replacement / Service and Repair.
EGR Pressure Transducer Bracket Removal:
2. Exhaust Gas Recirculation (EGR) pressure transducer from EGR pressure transducer bracket.
3. Two bolts and EGR pressure transducer bracket from intake manifold.
4. Four fuel injector connectors.
Description:
5. Two bolts and fuel pressure regulator from fuel rail.
Fuel Pulsation Damper:
6. Fuel pulsation damper and fuel feed pipe from fuel rail.
Fuel Injector Removal:
7. Three bolts and fuel rail from intake manifold.
8. Four fuel injectors from intake manifold.
Fuel Injection Installation:
INSTALL OR CONNECT
1. Replace fuel injector O-ring with new ones taking care not to damage them.
2. Grommets to fuel injectors.
Inspect
Insulators for breakage or scoring. If damaged, replace insulator(s).
Insulators And Cushions Installation:
3. Insulators and cushions to intake manifold.
4. Apply thin coat of fuel to O-rings. Install injectors to fuel rail and then the whole assembly to the intake manifold.
NOTICE: Make sure that the fuel injectors rotate smoothly. If not, probable cause is an incorrectly installed O-ring, replace with a new one.
5. Three bolts to fuel rail. Tighten three fuel rail bolts to 18-28 Nm (13-20 lb. ft.).
NOTICE: Make sure that the fuel injectors rotate smoothly.
Installing Fuel Pressure Regulator:
6. Fuel feed pipe, fuel pulsation damper and new gasket to fuel rail.
NOTICE: Apply thin coat of engine oil to new gaskets.
Tighten fuel pulsation damper to 25-35 Nm (18.5-25 lb. ft.).
7. Fuel pressure regulator; secure with two bolts. Tighten fuel pressure regulator bolts to 8-12 Nm (6-8.5 lb. ft.).
8. Four fuel injector connectors.
9. EGR pressure transducer bracket to intake manifold; secure with two bolts. Tighten EGR pressure transducer bracket bolts to 23 Nm (17 lb. ft.).
10. EGR pressure transducer to EGR pressure transducer bracket.
11. Throttle body. Refer to Throttle Body Replacement.