Fuel Injector: Service and Repair

REMOVAL AND INSTALLATION

PRE-REMOVAL 0PERATION
1. Fuel Line pressure Reduction
2. Spark Plug Cable Removal

REMOVAL STEPS
1. Fuel high pressure hose connection
2. 0-ring
3. Fuel return hose connection
4. Vacuum hose connection
5. Fuel pressure regulator
6. 0-ring
7. PCV hose
8. Injector connectors
9. Fuel rail
10. Insulators
11. Insulators
12. Injectors
13. 0-rings
14. Grommets








REMOVAL SERVICE POINTS
Remove the fuel rail (with the injectors attached to it.)

CAUTION
- Do not drop the injector.

INSTALLATION SERVICE POINTS
1. Apply a small amount of clean engine oil to the 0-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 0-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.)

HIGH PRESSURE FUEL HOSE CONNECTION
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 0-ring.

CAUTION
- Do not let the engine oil get into the fuel rail.

POST-INSTALLATION OPERATION
1. Spark Plug Cable Installation
2. Fuel Leakage Inspection