Cold Start Injector: Testing and Inspection

1. Remove cold start valve leaving fuel line connected and position nozzle of valve over suitable graduated cylinder.
2. Disconnect electrical connector from valve and connect jumper wires to valve terminals using suitable adapter.
3. To activate fuel pump, remove fuel pump relay from terminal board and connect battery voltage to terminal 87 in relay socket.
4. Energize valve for 1 minute by connecting jumper wires to battery. The fuel mist from the injector is highly flammable, and potentially explosive. Care must be taken not to produce sparks near open container of fuel when energizing and de-energizing injectors.
5. Spray pattern should be an even cone with an angle of approximately 80°.
6. Injection rate should be 85cc ± 12% at 2.5 ± 0.05 bar (36 ± 1 psi).
7. After de-energizing valve, dry valve tip and observe leakage with fuel pump energized.
8. Valve should not leak more than .3cc of fuel in 1 minute at 2.5 bar (36 psi).
9. De-energize fuel pump, then check resistance of valve solenoid coil with suitable ohmmeter. Resistance should be 3 - 5 ohms at 20°C (68°F).
10. If cold start valve performance is not as outlined, valve should be replaced.
11. Install cold start valve using new seal, start engine and check for leaks.