22 · Diagnostics

Excessive exhaust fumes

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

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Fault diagnosisExcessive exhaust fumes

EXCESSIVE EXHAUST FUMES

2.4 JTD 10V

There are dense exhaust fumes with particles.

STEP	OPERATIONS TO BE CARRIED OUT	TEST RESULTS
0	PRELIMINARY CHECKS	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	First, check: the engine oil level the condition of the air filter	Move on to Step	1. Oil level too high	1. Adjust engine oil level
		Move on to Step	2. Filter element dirty or damaged	2. Replace the filter element See in Op. 1048A14 air cleaner filtering element - replace.
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 node:in errors ambient that there are no faults; in parameters ambient the plausibility of all the parameters	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. Parameters not plausible	2. 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 gases intake circuit: in particular, check that there are no obstructions in the separator (tappet cover) 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	AIR CIRCUIT CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the condition and seal of the air supply circuit	Move on to Step	Circuit component damaged	Replace the damaged component
4	E.G.R. ACTUATOR CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Carry out the active diagnosis of the EGR operating solenoid valve	Move on to Step	Actuator not working	Move on to Step
5	E.G.R. ELECTRICAL CIRCUIT CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the continuity/insulation of the connections between the engine control unit and the EGR solenoid valve (Wiring Diagram ) E5050 DIESEL ENGINE ELECTRONIC MANAGEMENT	Move on to Step	Electrical connections faulty	Restore the connections (Wiring Diagram ) E5050 DIESEL ENGINE ELECTRONIC MANAGEMENT
6	E.G.R. ASSEMBLY OPERATING CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Detach the actuator from the vehicle and dismantle the valve assembly to check that it is working properly	Move on to Step	1. Valve stuck open	1. Eliminate the cause of the problem, if necessary, replace the actuator
		Move on to Step	2. Valve free, electro-magnet defective	2. Replace the actuator See in Op. 1080C26 MOTOR FOR EGR VALVE SELF-ADJUSTMENT - R.R.
7	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
8	CHECK ON CAUSE OF INSUFFICIENT COMPRESSION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	R/R head for valve leakage test Check condition of cylinders/piston rings	Move on to Step	1. Valve seal insufficient	1. Overhaul the head See in Op. 1016E10 SINGLE CYLINDER HEAD, removed - Overhaul
		Move on to Step	2. Cylinder/ring wear outside tolerances	2. Restore correct operating clearances
9	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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