W05 WHITE EXHAUST FUMES - Alfa - 156 - eLearn

3233204 - W05 WHITE EXHAUST FUMES

There is a large amount of exhaust fumes, with light coloured smoke.

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	First check that there is no water or other fluids in the fuel tank	Continue to Step 1	Presence of dirt in the fuel tank	Clean the fuel tank Op. 1040A10
1	CHECKING WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
1.6 TS 1.8 TS [d] 2.5 V6	Connect diagnostic equipment (Examiner or other instruments) to the diagnostic socket. Check that there are no faults in the engine management control unit	Continue to Step 2	An error is detected in the control unit	Continue following the instructions for the diagnostic equipment
1.6 TS 1.8 TS [d] 2.5 V6		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
1.9 JTD 8v 2.4 JTD 10v	Connect diagnostic equipment (Examiner or other instruments) to the diagnostic socket. Check that there are no faults in the engine management control unit	Continue to Step 2	An error is detected in the control unit	Continue following the instructions for the diagnostic equipment
1.9 JTD 8v 2.4 JTD 10v		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 E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
2	ACTIVE DIAGNOSIS WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
1.6 TS 1.8 TS [d] 2.5 V6	Using the diagnostic equipment (Examiner or other instruments) carry out the active diagnosis of the injectors	Continue to Step 3	Injector connections faulty	Restore the connection of the injectors with the control unit, See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT
1.6 TS 1.8 TS [d] 2.5 V6		Continue to Step 3	Injectors faulty	Replace injectors Op. 1056B70
1.9 JTD 8v 2.4 JTD 10v	Using the diagnostic equipment (Examiner or other instruments) carry out the active diagnosis of the injectors.	Continue to Step 3	Injector connections faulty	Restore the connection of the injectors with the control unit, See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
1.9 JTD 8v 2.4 JTD 10v		Continue to Step 3	Injectors faulty	Replace injectors Op. 1060F10
3	CHECKING CYLINDER HEAD GASKET	All OK	Problems met	Operation
1.6 TS 1.8 TS [d] 1.9 JTD 8v 2.4 JTD 10v	Check:: that the cylinder head tightening is correct that the gasket is not leaking	Continue to Step 4	Cylinder head tightening not correct	Restore correct tightening
1.6 TS 1.8 TS [d] 1.9 JTD 8v 2.4 JTD 10v		Continue to Step 4	Gasket damaged	Replace the gasket Op. 1016C11
2.5 V6	Check:: that the cylinder head tightening is correct that the gasket is not leaking	Continue to Step 4	Cylinder head tightening not correct	Restore correct tightening
2.5 V6		Continue to Step 4	Gasket damaged	Replace the gasket Op. 1016D11
4	CHECKING BLOW-BY CIRCUIT	All OK	Problems met	Operation
	Check the condition of the blow-by gas intake circuit. In particular, check that there are no obstructions in the separator or in the pipes	Continue to Step 5	Blow-by circuit faulty	Restore the operation of the circuit; if necessary, replace the pipes (see Assembly 1080D)
		Continue to Step 5	Fault in the separator	Replace the separator Op. 1080D34
5	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'

There is a large amount of exhaust fumes, with light coloured smoke.

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	First check: whether there is service information on the subject no water or other fluids in the fuel tank	Continue to Step 1	Presence of dirt in the fuel tank	Clean the fuel tank
1	ROAD TEST THE VEHICLE	All OK	Problems met	Operation
	With the engine at operating temperature and after a long period of deceleration, check when then accelerating whether the problem is considerably worse	Continue to Step 2	Increase in acceleration fumes (after deceleration) caused by oil from the piston rings or valve guides	Continue to Step 3
		Continue to Step 2	Lack of dialogue with the control unit	Restore the connection between engine management control unit and diagnostic connector See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
2	CHECKING BLOW-BY CIRCUIT	All OK	Problems met	Operation
	Check the condition of the blow-by gas intake circuit. In particular, check that there are no obstructions in the separator or in the pipes	Continue to Step 3	Fault in the pipe from separator to intake	Restore the correct operation of the circuit: if necessary, replace the pipes
		Continue to Step 3	Fault in separator (rocker cover)	Restore the correct operation of the circuit; if necessary replace the rocker cover
3	CHECKING CAUSE OF INSUFFICIENT COMPRESSION	All OK	Problems met	Operation
	Remove-refit the cylinder head: Check the condition of the cylinders/piston rings the seal of the valve oil seals	Continue to Step 4	Wear on cylinders/piston rings outside tolerance	Restore the correct clearances
		Continue to Step 4	Valve oil seals leaking	Replace the oil seals, if necessary, overhaul the head
4	CHECKING CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis