22 · Diagnostics

White exhaust fumes

Make: Lancia
Model: Thesis Factory Service Manual
Year: 2002–2009
Section: Emissions › White exhaust fumes

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Fault diagnosisWhite exhaust fumes

WHITE EXHAUST FUMES

2.0 TB, 2.4 20V, 2.4 JTD 10V

A high level of pale-coloured exhaust fumes is noted.

STEP	OPERATIONS TO BE CARRIED OUT	TEST RESULTS
0	PRELIMINARY CHECKS	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	First, check: that there is no water or other liquids in the fuel tank engine oil level	Move on to Step	1. Presence of dirt in the fuel tank	1. Clean the fuel tank
		Move on to Step	2. Level too high	2. Top up the engine oil level
1	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Connect the Examiner diagnostic equipment to the diagnostic connector and check the following at the engine management control unit:in errors ambient that there are no faults	Move on to Step	Error detected in the control unit	Continue following the instructions for the diagnostic equipment
2	BLOW-BY CIRCUIT CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	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	Move on to Step	1. Fault in the pipe from separator to intake	1. Restore circuit to working order: change the pipe if necessary
		Move on to Step	2. Fault in the separator (tappet cover)	2. Restore circuit to working order: if necessary, replace the tappet cover
3	CYLINDER COMPRESSION CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
2.4 20 V,2.4 20 V	Carry out the cylinder compression check	Move on to Step	Cylinder compression insufficient	Move on to Step
3	CYLINDER COMPRESSION CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
2.0 TB,2.4 JTD 10V	Carry out the cylinder compression check	Move on to Step	Cylinder compression insufficient	Move on to Step
4	CHECK THE CAUSE OF THE INSUFFICIENT COMPRESSION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
2.4 20 V,2.4 20 V	R.R. cylinder head: Check condition of cylinders/piston rings the seal of the valve oil seals	Move on to Step	1. Cylinder/ring wear outside tolerances	1. Restore correct operating clearances
2.4 20 V,2.4 20 V		Move on to Step	2. Valve oil seals insufficient	2. Replace the oil seals, if necessary, overhaul the head
4	CHECK THE CAUSE OF THE INSUFFICIENT COMPRESSION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
2.0 TB,2.4 JTD 10V	R.R. cylinder head: Check condition of cylinders/piston rings the seal of the valve oil seals	Move on to Step	1. Cylinder/ring wear outside tolerances	1. Restore correct operating clearances
2.0 TB,2.4 JTD 10V		Move on to Step	2. Valve oil seals insufficient	2. Replace the oil seals, if necessary, overhaul the head
5	TURBOCHARGER SEAL CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
2.0 TB,2.4 JTD 10V	Check: that there are no engine oil leaks from the turbocharger impeller shaft that the turbocharger impeller shaft clearance is not too large	Move on to Step	1. Leaks	1. Change the turbocharger See in Op. 1064A10 TURBOCHARGER - R.R.
2.0 TB,2.4 JTD 10V		Move on to Step	2. Clearance too large	2. Change the turbocharger See in Op. 1064A10 TURBOCHARGER - R.R.
6	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the fault is no longer present

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Parts & tools for this job For 2002 Lancia Thesis

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