VISUAL INSPECTION
Visually inspect all electrical wiring, looking for chafed, stretched, cut or pinched wiring. Ensure electrical connectors fit tightly and are not corroded. Inspect condition of battery and fuses. Ensure vacuum hoses are properly routed and are not pinched or cut. See VACUUM DIAGRAMS article to verify routing and connections (if necessary). Inspect air induction system for possible vacuum leaks.
Fuel Injector Inspection
- Warm up engine and let idle. Using screwdriver or stethoscope, listen to each injector. Clicking should be heard. If no sound is heard, measure resistance of each injector. See «INJECTOR RESISTANCE»(ref-11996-S40029118602001073000000) table. Replace injectors that do not meet specification. If injectors are okay, and no operational sound is heard. go to next step.
- Check wiring to injectors. Ensure electrical connectors fit tightly and are not corroded. For circuit testing, see WIRING DIAGRAMS article and appropriate SELF-DIAGNOSTICS article.
| Application | (1) Ohms |
|---|---|
| Optima & Magentis (Canadian) | 13-16 |
| Rio | 13.5-15.5 |
| Sephia & Spectra | 14.5 |
| Sportage | 13.5-14.1 |
| (1) With temperature at 68°F (20°C). | |
| (1) | With temperature at 68°F (20°C). |
INJECTOR RESISTANCE
Fuel Injector Leakage Test
- Remove fuel injectors together with fuel rail. Using wire, secure fuel injectors to fuel rail. Leave harness connected to fuel injectors.
- Jumper DLC terminals FUEL PUMP and B+. DLC is located on left side of engine compartment. (Схема №1)and (Схема №2).
- Turn ignition on. Tilt injectors 60° and watch for leaks. Replace any injectors that leak. Use new "O" rings when installing injectors.
Fuel Injector Volume Test
Note. For Optima & Magentis (Canadian) and Rio, injector volume specification is not given by manufacturer.
- Remove fuel injectors together with fuel rail. Secure fuel injectors to fuel rail. Place end of injector to be tested in graduated cylinder.
- If using injector tester, connect injector tester between battery and injector. If not using injector tester, reconnect injector connectors. Connect jumper wire between injector to ECM wire and ground. See appropriate wiring diagram in WIRING DIAGRAMS article for wire colors.
- Turn ignition on. Time injector flow and measure volume. Injector flow should be 4.4 oz. (130 ml) per minute. If volume is not as specified, replace injector. Use NEW "O" rings when installing injectors.