B20 ENGINE STARTS, AND CUTS OUT STRAIGHT AWAY - Alfa - 156 - eLearn

The engine starts, with difficulty and then immediately cuts out suddenly

1	CHECKING WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
		Results of the tests
	Connect the diagnostic equipment (Examiner or other instruments) to the tester input and check the engine management control unit: for errors in the 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	unreliable parameters	Continue according to the instructions for the diagnostic equipment
2	SUPPLY PRESSURE CHECK	All OK	Problems met	Operation
	With the ignition ON and the engine switched off, check the fuel supply pressure . Op. 0510C10 Start up the engine and check that the supply pressure does not decrease	Continue to Step 3	The supply pressure decreases	Replace the fuel pump assembly Op. 1040A70
3	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists: control unit faulty	Replace engine management control unit Op. 1056B82