Fuel Injector: Service and Repair
REMOVAL AND INSTALLATION
Pre-removal Operation
- Reduce the Inner Pressure of Fuel Line and Hose.
REMOVAL SERVICE POINT
FUEL RAIL/INJECTOR REMOVAL
Remove the fuel rail (with the injectors attached to it).
Caution:
Care must be taken, when removing the fuel rail, not to drop the injectors.
INSTALLATION SERVICE POINTS
INJECTOR INSTALLATION
1. Apply a small amount of clean engine oil to the O-ring.
Caution:
Do not let the engine oil get into the fuel rail.
2. While turning the injector to the left and right, install it to the fuel rail
3. Check to be sure that the injector turns smoothly. If it does not turn smoothly, the O-ring may be trapped, remove the injector and then re-insert it into the fuel rail and check once again.
FUEL PRESSURE REGULATOR INSTALLATION
1. Apply a small amount of clean engine oil to a new O-ring and insert it to the fuel rail carefully.
Caution:
Do not let the engine oil get into the fuel rail.
2. If the fuel pressure regulator does not move smoothly, the O-ring may be folded. Then, remove the regulator to check the O-ring for damage.
3. Tighten the regulator to the specified torque.
Tightening torque: 8.8 Nm (6.5 ft.lbs.)
When connecting the high pressure fuel hose to the fuel rail, apply a small amount of clean engine oil to the hose union, and then insert, being careful not to damage the O-ring.
Caution:
Do not let the engine oil get into the fuel rail.