Fault diagnosis

W05 WHITE EXHAUST FUMES

Engines: 2.0 16V, 2.0 JTD 8V, 2.3 JTD 16V, 2.8 JTD 8V

Engines: 2.3 JTD 16V

A high level of pale-coloured exhaust fumes is noted

Engines: 2.3 JTD 16V

STEP	OPERATIONS TO BE CARRIED OUT	TEST RESULTS
0	PRELIMINARY CHECKS	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	First of all, check for water or other fluids in the fuel tank. Check the 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. Adjust oil level
1	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Connect the diagnostic test equipment (Examiner or other instruments) to the test input.Check that there are no faults in the engine management control unit	Move on to Step	1. Error detected in the control unit	1. Continue following the instructions for the diagnostic equipment
		Move on to Step	2. No communication with the control unit	2. Restore the connection between the engine management control unit and the diagnostic connector See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
2	BLOW-BY CIRCUIT CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the condition of the blow-by gas intake circuit. In particular, check for obstructions in the separator or 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
			2. Fault in fuel recovery pipe	2. Restore circuit to working order: change the pipe if necessary
			3. Fault in the separator	3. Restore circuit to working order: replace the separator if necessary
3	TURBOCHARGER OPERATION/CONDITION CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check operation and for lubricant oil leaks	Move on to Step	Turbocharger inefficient	Change the turbocharger Op. 1064A19 TURBOCHARGER UNIT - EXHAUST MANIFOLD - COUPLING SLEEVE AND EXHAUST PIPES - R R
4	CYLINDER COMPRESSION CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Carry out the cylinder compression check.	Move on to Step	Cylinder compression insufficient	Move on to Step
5	CHECK CYLINDER HEAD GASKET AND VALVE OIL SEALS	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check: Cylinder head tightening Gasket seal. Valve oil seal condition	Move on to Step	1. Cylinder head tightening incorrect	1. Change the head gasket Op. 1004E20 ENGINE - DISMANTLE AND RE-BUILD FOLLOWING OPERATION 1004E10 - WASH AND CHECK DISMANTLED PARTS - RE-FIT CYLINDER HEAD AND OIL SUMP - DOES NOT INCLUDE REPAIRS TO CYLINDER HEAD AND AUXILIARY UNIT
			2. Gasket damaged	2. Change the valve oil seals
			3. Oil seals inefficient
6	CHECK ON CAUSE OF INSUFFICIENT COMPRESSION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	With the cylinder head removed, check: valve seal; cylinder/piston ring wear conditions.	Move on to Step	1. Valve seal insufficient	1. Service cylinder head Op. 1016E10 SINGLE CYLINDER HEAD, REMOVED - OVERHAUL
		Move on to Step	2. Cylinder/ring wear outside tolerances	2. Restore correct operating clearance
7	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the fault is no longer present