Fault diagnosis

W11 EXCESSIVE EXHAUST FUMES

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

Engines: 2.3 JTD 16V

High exhaust fume levels are noted, with dense fumes and more particulate that specified

Engines: 2.3 JTD 16V

STEP	OPERATIONS TO BE CARRIED OUT	TEST RESULTS
0	PRELIMINARY CHECKS	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check engine oil level.Check air filter conditions	Move on to Step	1. Excessive oil level	1. Restore correct oil level
	Check engine oil level.Check air filter conditions	Move on to Step	2. Filter element dirty or damaged	2. Replace the filter element Op. 1048A14 AIR CLEANER FILTERING ELEMENT - REPLACE.
1	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Connect the diagnostic test equipment (Examiner or other instruments) to the tester input.Check: That there are no faults in the engine management control unit; 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. 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 detected in the pipe from intake to separator	1. Restore circuit to working order: change the pipe if necessary
			2. Fault detected in the pipe from separator to intake	2. Restore circuit to working order: change the pipe if necessary
			3. Fault detected in the recovery pipe	3. Restore circuit to working order: change the pipe if necessary
			4. Fault in the separator	4. Replace the separator
3	AIR CIRCUIT CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the condition and seal of the air intake circuit: in particular, check for oil in the pipes	Move on to Step	1. Circuit component damaged	1. Replace the damaged component
		Move on to Step	2. Oil in the intake pipes	2. Clean the pipes (check source of oil)
4	EGR VALVE OPERATION CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check EGR valve operation	Move on to Step	Valve operating fault	Replace EGR valve
5	CYLINDER COMPRESSION CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Carry out cylinder compression check	Move on to Step	Cylinder compression insufficient	Move on to Step
6	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 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