B10 ENGINE DOES NOT START / UNDER NO CIRCUMSTANCES - Alfa - 166 - eLearn

3308583 - B10 ENGINE DOES NOT START / UNDER NO CIRCUMSTANCES

The engine does not start. When the key is turned, the instruments light up, the starter motor turns, but the engine will not start.

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	First check for presence of fuel in the tank, any intervention of the inertial switch, air cleaner and air intake system	Continue to Step 1	No fuel	Restore:
			Inertia switch operated	Restore:
			Air cleaner dirty or partially blocked	Replace air filter Op. 1048A14
1	CHECK I.E. AND CODE FAILURE WARNING LIGHTS	All OK	Problems met	Operation
	Place the key in the ON position and check that: the i.e. failure warning light comes on for about 4 seconds and then goes out the CODE warning light comes on for less than one second and then goes out	Continue to Step 2	The i.e. failure warning light comes on and remains on	See table K50 I.E. FAILURE WARNING LIGHT ON
			The CODE warning light comes on and remains on	See table K52 CODE FAILURE WARNING LIGHT ON
			Both the warning lights come on and remain on	See table K56 I.E. WARNING AND CODE WARNING LIGHT BOTH ON
			The i.e. failure warning light does not come on	See table K53 I.E. FAILURE WARNING LIGHT OFF
			The CODE warning light does not come on	See table K55 CODE FAILURE WARNING LIGHT OFF
2	CHECKING WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Connect diagnostic equipment (Examiner or other instruments) to the diagnostic socket. Verify: that there are no faults in the engine management control unit the plausibility of all the parameters	Continue to Step 3	An error is detected in the control unit	Continue following the instructions for the diagnostic equipment
		Continue to Step 3	Lack of dialogue with the control unit	Restore the connection between the engine management control unit and the diagnostic connector ( See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT )
3	FUEL FILTER CHECK	All OK	Problems met	Operation
		Continue to Step 4	Presence of water, petrol, paraffin or dirt detected	Clean tank and pipes and replace filter element Op. 1044B20
4	CHECK RETURN LOW PRESSURE	All OK	Problems met	Operation
	Check the pressure between the twin manifold and the return pipe to the tank: See Test 1060A Check low pressure fuel circuit	Continue to Step 5	Pressure over 1 bar: the return circuit to the tank is clogged	Remove any blockages in the return pipe or the cage for the low pressure pump immersed in the tank
5	CHECK ON DELIVERY LOW PRESSURE	All OK	Problems met	Operation
	Check filter between diesel filter and 'radialjet' high pressure pump See Test 1060B Check low pressure fuel circuit	Continue to Step 6	Leaks in circuit	Eliminate fuel leaks from pipes/low pressure circuit connections
			Pressure under 1.8 bar or difference in pressure between Test B and Test A less than 1 bar	Replace valve on diesel filter mounting Op. 1044B16 Replace the fuel pump Op. 1040A70
			Pressure over 3.5 bar	Replace valve on diesel filter mounting Op. 1044B16
6	INJECTOR LEAK TEST	All OK	Problems met	Operation
	Check whether diesel is leaking from the injectors: See Test 1060C Check high pressure fuel circuit	Continue to Step 7	One or more injectors leaking	Replace injector(s) Op. 1060F10
7	HIGH PRESSURE CHECK	All OK	Problems met	Operation
	Check diesel pressure parameter measured with diagnostic instrument: See Test 1060D Check high pressure fuel circuit	Continue to Step 8	Pressure reading below 150 bar	Replace high pressure pump Op. 1060E10
		Continue to Step 8	Leaks in circuit	Eliminate fuel leaks from high pressure circuit pipes/connectors
8	CHECKING TIMING	All OK	Problems met	Operation
	Check that the engine timing is correct Op. 0510A20	Continue to Step 9	Timing not correct	Restore the correct engine timing Op. 1032B14
9	HECK ON 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'