22 · Diagnostics

White exhaust fumes

Make: Alfa Romeo
Model: 147 Factory Service Manual
Year: 2000–2004
Section: Emissions › White exhaust fumes

‹ Prev CO EMISSIONS LOW, NOx EMISSIONS HIGH Next › Black exhaust fumes

Fault diagnosisWhite exhaust fumes

WHITE EXHAUST FUMES

1.6 TS, 2.0 TS

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

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Preliminarily check that the fuel tank contains no water or other fluids	Continue to Step 1	Presence of dirt in the fuel tank	Clean the fuel tank
1	CHECKING WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Connect the diagnostic equipment (Examiner or other instruments) to the engine management control unit. Check 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
		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 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
		Continue to Step 3	Injector faulty	Replace injector Op. 1056B70
3	CHECKING CYLINDER HEAD GASKET	All OK	Problems met	Operation
	Check: That the cylinder head tightening is correct The gasket seal	Continue to Step 4	Cylinder head tightening not correct	Restore the correct tightening
		Continue to Step 4	Gasket damaged	Replace the seal Op. 1016C10
4	CHECKING BLOW-BY CIRCUIT	All OK	Problems met	Operation
	Check the condition of the blow-by gases 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
5	CORRECT OPERATION CHECK	All OK	Problems met	Operation
	Check that the fault is no longer present		Fault persists	Search for the fault starting from another symptom'

1.9 JTD 8V

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

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Preliminarily check: no water or other fluids in the fuel tank engine oil level	Continue to Step 1	Presence of dirt in the fuel tank	Clean the fuel tank
		Continue to Step 1	Level too high	Top up the engine oil level
1	CHECKING 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	Continue to Step 2	An error is detected in the control unit	Continue following the instructions for the diagnostic equipment
		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	CHECK ON CYLINDER COMPRESSION	All OK	Problems met	Operation
	Carry out the cylinder compression test	Continue to Step 3	Cylinder compression insufficient	Continue to Step 4
3	CHECKING CYLINDER HEAD GASKET AND VALVE SEALS	All OK	Problems met	Operation
	Check: that the cylinder head tightening is correct that the gasket is not leaking that the valve seals are not leaking	Continue to Step 5	Cylinder head tightening not correct	Proceed with removal/refitting of the cylinder head and tighten it correctly Op. 1016C11
			Gasket damaged	Replace the cylinder head gasket Op. 1016C11
			Oil seals leaking	Replace valve oil seals Op. 1016E10
4	CHECKING CAUSE OF INSUFFICIENT COMPRESSION	All OK	Problems met	Operation
	With the cylinder head removed, check: valve seal condition of cylinders/piston rings	Continue to Step 5	Insufficient valve seal	Overhaul the cylinder head
		Continue to Step 5	Wear on cylinders/piston rings outside tolerance	Restore correct operating clearances
5	CHECKING BLOW-BY CIRCUIT	All OK	Problems met	Operation
	Check the condition of the blow-by gases intake circuit. In particular, check that there are no obstructions in the separator or in the pipes	Continue to Step 6	Fault in the pipe from separator to intake	Restore the correct operation of the circuit: if necessary, replace the pipes
		Continue to Step 6	Fault in separator (rocker cover)	Restore the correct operation of the circuit; if necessary replace the rocker cover
6	CHECKING SEAL OF TURBOCHARGER GASKETS	All OK	Problems met	Operation
	Check that there are no engine oil leaks from turbocharger blade spindle	Continue to Step 7	Insufficient gasket seal	Replace turbocharger
7	CORRECT OPERATION CHECK	All OK	Problems met	Operation
	Check that the fault is no longer present		Fault persists	Search for the fault starting from another symptom'

1.9 JTD 16V

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

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Preliminarily check: no water or other fluids in the fuel tank engine oil level	Continue to Step 1	Presence of dirt in the fuel tank	Clean the fuel tank
		Continue to Step 1	Level too high	Top up the engine oil level
1	CHECKING WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Connect the Examiner diagnostic equipment to the diagnostic connector and check the engine management control unit: in error mode that there are no faults	Continue to Step 2	An error is detected in the control unit	Continue following the instructions for the diagnostic equipment
2	CHECKING BLOW-BY CIRCUIT	All OK	Problems met	Operation
	Check the condition of the blow-by gases 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 the intake to the separator	Restore the correct operation of the circuit: if necessary, replace the pipes
		Continue to Step 3	Fault in the separator	Restore the correct operation of the circuit: if necessary, replace the separator
3	CHECK ON CYLINDER COMPRESSION	All OK	Problems met	Operation
	Carry out the cylinder compression test	Continue to Step 5	Cylinder head tightening not correct	Continue to Step 4
4	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 5	Wear on cylinders/piston rings outside tolerance	Restore the correct clearances
		Continue to Step 5	Insufficient valve oil seal	Replace the oil seals, if necessary, overhaul the head
5	CHECKING SEAL OF TURBOCHARGER GASKETS	All OK	Problems met	Operation
	check for engine oil leaks from turbocharger impeller spindle for excessive turbocharger impeller shaft clearance	Continue to Step 6	For leaks	Replace turbochargerOp. 1064A10
		Continue to Step 6	Excessive clearance present	Replace turbochargerOp. 1064A10
6	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis

All versions

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

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Preliminarily check: if 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
2	CHECKING BLOW-BY CIRCUIT	All OK	Problems met	Operation
	Check the condition of the blow-by gases 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 the intake to the separator	Restore the correct operation of the circuit: if necessary, replace the pipes
		Continue to Step 3	Fault in the separator	Restore the correct operation of the circuit: if necessary, replace the separator
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	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis

3.2 V6

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

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Preliminarily check: no water or other fluids in the fuel tank engine oil level	Continue to Step 1	Presence of dirt in the fuel tank	Clean the fuel tank
		Continue to Step 1	Level too high	Top up the engine oil level
1	CHECKING WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Connect the Examiner diagnostic equipment to the diagnostic connector and check the engine management control unit: in error mode that there are no faults	Continue to Step 2	An error is detected in the control unit	Continue following the instructions for the diagnostic equipment
2	CHECKING BLOW-BY CIRCUIT	All OK	Problems met	Operation
	Check the condition of the blow-by gases 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 the intake to the separator	Restore the correct operation of the circuit: if necessary, replace the pipes
		Continue to Step 3	Fault in the separator	Restore the correct operation of the circuit: if necessary, replace the separator
3	CHECK ON CYLINDER COMPRESSION	All OK	Problems met	Operation
	Carry out the cylinder compression test	Continue to Step 5	Cylinder compression insufficient	Continue to Step 4
4	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 5	Wear on cylinders/piston rings outside tolerance	Restore the correct clearances
		Continue to Step 5	Valve oil seals leaking	Replace the oil seals, if necessary, overhaul the head
5	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis

‹ Prev CO EMISSIONS LOW, NOx EMISSIONS HIGH Next › Black exhaust fumes

Parts & tools for this job For 2000 Alfa Romeo 147

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