2888322 - B11 ENGINE STARTS WITH DIFFICULTY' / WHEN WARM
When the engine is warm, for example just after it has been switched off following a long journey, it does not start, or it starts with difficulty, only after repeated attempts. When the key is turned the instruments light up, the starter motor turns, but the engine does not start.| Results of the tests | ||||
| 0 | PRELIMINARY CHECKS | All OK | Problems met | Operation |
|---|---|---|---|---|
Preliminarily check:
| Continue to Step 1 | Spark plugs dirty or damaged | Clean or replace the spark plugs Op. 5510D10 | |
| Spark plug leads damaged | Replace the spark plug leads Op. 5510D14 | |||
| Air intake circuit component damaged | Replace the component (see Assembly 1048A) | |||
| Air cleaner dirty or partially blocked | Replace the air filter Op. 1048A14 | |||
| 1 | CHECK WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
| Connect
the diagnostic equipment (Examiner or other instruments) to the
diagnostic socket Check:
| Continue to Step 2 | An error is detected in the control unit | Continue according to the instructions for the diagnostic equipment | |
| Lack of dialogue with the control unit | Restore the connection between the engine management control unit and the diagnostic connector ( See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT ). | |||
| 2 | ACTIVE DIAGNOSIS WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
Using the diagnostic equipment (Examiner or other instruments) carry out the active diagnosis of:
| Continue to Step 3 | Solenoid valve connection faulty | Restore the connection of the solenoid valve with the control unit ( See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT ) | |
| Solenoid valve faulty | Replace the solenoid valve Op. 1080E28 | |||
| Injector connections faulty | Restore the connection of the injectors with the control unit, ( See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT ) | |||
| Injectors faulty | Replace the injectors Op. 1056B70 | |||
| 3 | COILS CHECK | All OK | Problems met | Operation |
| Using the diagnostic equipment (Examiner or other iinstruments), carry out the active diagnosis of the coils | Continue to Step 4 | Coils connection faulty | Restore the connection for the coils with the control unit, ( See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT ) | |
| Ignition coils faulty | Replace the ignition coils Op. 5510C14 | |||
| 4 | FUEL PRESSURE CHECK | All OK | Problems met | Operation |
| Check the fuel supply pressure Op. 0510C10 . | Continue to Step 5 | Pressure not correct | Replace the fuel pump assembly Op. 1040A70 | |
| 5 | CYLINDER COMPRESSION CHECK | All OK | Problems met | Operation |
| Carry out the cylinder compression test Op. 0510A10 . | Continue to Step 6 | Compression values not correct | Restore the correct cylinder compression, e.g by checking the seal of the injectors Op. 1056B70 and the cylinders if necessary | |
| 6 | TIMING CHECK | All OK | Problems met | Operation |
| Check that the engine timing is correct | Continue to Step 7 | Timing not correct | Restore the correct engine timing Op. 1032B14 | |
| 7 | CHECKING CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer present | End of diagnosis | Fault persists | Search for the fault starting from another symptom' | |