Santa Fe Field Case Trouble= Impossible to Start the Engine

MODEL: Hyundai Santa Fe ( SM ) 2002

Displacement: 2000 cc

Fuel : Diesel

subject : IMPOSSIBLE TO START THE ENGINE – DIESEL FUEL

1) CONDITION:

1. Impossible to start the Engine
2. Cranking is possible

2) Cuase :

• Fuel line is clogged with contaminated fuel diesel.

3) Diagnosis

1. Scan tool check
   - Current data : Fuel pressure is lower than 44 bar during cranking.
   
   * Specification : Higher than 150 bar.
   
2. Check the low pressure fuel line – The fuel pump does not operate.
3. After replacing the fuel pump, starting the engine is possible but hesitation still occurs.
4. Check the service data.
   -No trouble found.
   -The amount of fuel injection is 24 cc in idle codition.
5. Check the amount of returned fuel to find poor injectors.
6. The color of diesel fuel is different from normal fuel.

4) Repair Guide:

1. Replace all the related parts.
   (Diesel fuel, low pressure pump,fuel tank , fuel sender, fuel filter.)
2. Clean the fuel system.
   -Diagnosis tips : Engine hesitation and/or stalling problems on CRDI diesel engine.
   -If DTC code regarding sensor or fuel pressure is displayed, check the related parts before replacing the component.
   -If the amount of fuel injection is abnormal, check the injectors and other parts related to control engine idle.
3. Checking method of fuel injector.
   - Check the amount of returned fuel from the injectors and compare it each other.
   - Check the injection power balance.
4. Disconnect the injector connector one after another in idle condition.