Cold Start Injector: Testing and Inspection

1. Disconnect the Cold Start Injector connector.
2. Using an Ohmmeter, measure the resistance across the terminals.

Checking Cold Start Injector Resistance:

Resistance: 2 - 4 Ohms

3. If not as specified, replace the Cold Start Injector.
4. To test injector operation, remove the Cold Start Injector. Refer to COMPONENT REPLACEMENT AND REPAIR PROCEDURES.
5. Using special service tools (SST), connect Cold Start Injector to the fuel delivery pipe with new gaskets and union bolt.

Testing The Cold Start Injector With The Special Service Tool (SST):

6. Connect SST jumper wire connector and place a container under the Cold Start Injector to catch the expelled fuel.
7. Reconnect the negative battery cable, if removed and turn the ignition switch ON.
8. 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.

Installing A Service Wire On The Engine Check Connector:

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

Checking The Spray Pattern Of The Cold Start Injector:

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

Cold Start Injector Leak Test:

12. 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.
13. If no problems are found with the Cold Start Injector, test the Cold Start Injector Time Switch.
14. 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.
15. Reinstall the Cold Start Injector in the intake plenum. Refer to COMPONENT REPLACEMENT AND REPAIR PROCEDURES.
16. Start engine and check for fuel leaks.