22 · Diagnostics

Engine starts, and cuts out straight away

Fault diagnosisEngine starts, and cuts out straight away

ENGINE STARTS, AND CUTS OUT STRAIGHT AWAY

1.2 8v, 1.4 8v

The engine starts normally, though possibly with difficulty, then suddenly stalls

1	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
		Test results
	Connect the Examiner diagnostic equipment to the diagnostic socket. Check on the engine control node: that there are no errors in the control unit; parameter plausibility	Move on to Step 2	Error detected in the control unit	Continue following the instructions for the diagnostic equipment
		Move on to Step 2	Parameters not plausible	Continue following the instructions for the diagnostic equipment
2	CHECK SPARK PLUGS ARE INTACT	All OK	Problems encountered	Operation
	Remove the spark plugs and check their state and that the electrode gap is correct	Move on to Step 3	Spark plug fault	Replace the spark plugs Op. Op. 5510D10 SPARK PLUGS - R+R
3	SUPPLY PRESSURE CHECK	All OK	Problems encountered	Operation
	Check the fuel supply pressure with the ignition ON and the engine switched off Op. Op. 0510C10 FUEL SYSTEM - CHECK DELIVERY PRESSURE Start the engine and check that the supply pressure does not decrease	Move on to Step 4	The supply pressure decreases	Replace the petrol pump Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GAUGE CONTROL - R + R
4	CHECK ON CORRECT OPERATION	All OK	Problems encountered	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists: control unit defective	Replace the control unit Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R

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