Fuel Injector: Service and Repair

PRE-REMOVAL OPERATION
1. Fuel Line Pressure Reduction
2. Battery and Air Intake Hose Removal

Fuel Injectors And Rail:

REMOVAL STEPS
1. High-pressure fuel hose connection
2. 0-ring
3. Fuel return hose connection
4. Vacuum hose connection
5. Injector harness connector
6. Fuel rail
7. Injector connectors
8. Retainers
9. Injectors
10. 0-rings
11. 0-rings
12. Snap ring
13. Fuel pressure regulator
14. 0-ring
15. 0-ring

INSTALLATION SERVICE POINTS





Fuel Pressure Regulator Installation
1. Apply a small amount of clean engine oil to a new 0-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 0-ring may be folded. Then, remove the regulator to check the 0-ring for damage.





Injector Installation
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 reinsert it into the fuel rail and check again.

High Pressure Fuel Hose Connection
When connecting the high pressure fuel hose to the fuel rail, apply a small amount of 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. Battery and Air Intake Hose Installation
2. Fuel Leakage Inspection