Engine starts with difficulty / when warm

Make: Fiat
Model: Multipla Factory Service Manual
Year: 1998–2010
Section: Starting › Engine starts with difficulty / when warm

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Fault diagnosisEngine starts with difficulty / when warm

ENGINE STARTS WITH DIFFICULTY / WHEN WARM

1.6 16v

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.

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Preliminarily check: the state of the spark plugs and leads the condition of the air intake circuit	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: that there are no faults in the engine management control unit plausibility of all the parameters	Continue to Step 2	An error is detected in the control unit	Continue according to the instructions for the diagnostic equipment
		Continue to Step 2	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: vapour recovery solenoid valve injectors	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)
		Continue to Step 4	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. 1056B70and 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'

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Parts & tools for this job Staging For 1998 Fiat Multipla

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