Fuel Injector: Service and Repair

COMPONENTS

REMOVAL
1. Remove the intake air surge tank.
2. Release residual pressure from the fuel line to prevent fuel from spilling.

CAUTION: Cover the hose connection with rags to prevent fuel from leaking out due to residual pressure in the fuel line.

3. Remove the delivery pipe with the fuel injectors.

CAUTION:
(1) Do not drop any injectors when removing the delivery pipe.
(2) Be aware that fuel may flow out when removing the injector.

INSTALLATION





1. Install a new insulator to the intake manifold.
2. Install a new grommet and O-ring to the injector.
3. Apply a coating of solvent or gasoline to the O-ring of the injector.





4. While rotating the injector, install it on the delivery pipe.
5. Be sure that the injector turns smoothly in the delivery pipe.

NOTE: If it does not turn smoothly, the O-ring may not be installed properly. Remove the injector, re-insert it into the delivery pipe and re-check.





6. When installing the delivery pipe, check that the insulator is correctly inserted into the delivery pipe's installation hole.





7. Apply engine oil to the hose union before installing the high pressure hose. Then insert the high pressure hose, being careful not to damage the O-ring, and tighten securely.

CAUTION: Because high pressure is present between the fuel pump and the delivery pipe, be sure that there is no fuel leakage in this area.





8. Check for fuel leakage.
(1) Apply battery voltage to the fuel pump drive terminal which branches off from a harness on the upper part of the firewall.
(2) Check for fuel leakage in the system, particularly from the connection between the high pressure fuel hose and the fuel line.