Cold Start Injector: Testing and Inspection

RESISTANCE CHECK

1. Disconnect the Cold Start Injector connector.

Checking The Cold Start Injector Resistance:

2. Using an ohmmeter, check the resistance of the injector.

Resistance: 2 - 4 Ohms

3. If resistance is not as specified, replace the Cold Start Injector.

INJECTION CHECK

1. Remove the Cold Start Injector. For the proper procedure, refer to COMPONENT REPLACEMENT AND REPAIR PROCEDURES.
2. Using special service tools (SST), connect Cold Start Injector to the fuel delivery pipe with new gaskets and union bolt.

Testing Cold Start Injector With Special Service Tools (SST):

3. Connect SST jumper wire connector and place a container under the Cold Start Injector to catch the expelled fuel.
4. Reconnect the negative battery cable, if removed and turn the ignition switch ON.
5. Using a service wire, short terminals +B and FP of the engine check connector. This will cause the fuel pump to operate and pressurize the system.





6. Connect the test probes to the battery and check the fuel spray pattern of the Cold Start Injector.

Testing Cold Start Injector - Current Applied:

7. If injector does not spray, replace the Cold Start Injector.
8. If injector does spray normally, remove probes from battery and check injector for leakage.

Checking Cold Start Injector For Leakage:

9. The Cold Start Injector should not leak more than one (1) drop of fuel per minute. If excessive leakage is noted, replace the Cold Start Injector.
10. If no problems are found with the Cold Start Injector, test the Cold Start Injector Time Switch.
11. Remove service wire from engine check connector and carefully remove SST from Cold Start Injector. Clean-up any fuel that escapes when the SST is removed.
12. Reinstall the Cold Start Injector in the intake plenum. Refer to COMPONENT REPLACEMENT AND REPAIR PROCEDURES for proper procedure.
13. Start engine and check for fuel leaks.