W11 EXCESSIVE EXHAUST FUMES' - Alfa - 166 - eLearn

3308741 - W11 EXCESSIVE EXHAUST FUMES'

There are a great deal of exhaust fumes, with dense smoke and a higher level of particles than specified.

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	First check: engine oil level the condition of the air filter	Continue to Step 1	Oil level too high	Restore the correct level
		Continue to Step 1	Filter element dirty or damaged	Replace the filter element Op. 1048A14
1	CHECKING WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Connect diagnostic equipment (Examiner or other instruments) to the diagnostic socket. Verify: that there are no faults in the engine management control unit the plausibility of all the parameters	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 E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
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 detected in blow-by circuit	Restore the operation of the circuit; if necessary, replace the pipes (see Assembly 1080D)
		Continue to Step 3	Fault in the separator	Replace the separator Op. 1080D34
3	CHECKING AIR CIRCUIT	All OK	Problems met	Operation
	Check the condition and seal of the air supply circuit	Continue to Step 4	Circuit component damaged	Replace the component (see Assembly 1048A)
4	CHECK AIR INTAKE PIPES	All OK	Problems met	Operation
	Check to see if there is oil in air intake pipes	Continue to Step 5	There are traces of oil in air intake pipes	Clean the pipes on the air intake circuit
5	CHECKING VALVE CLEARANCES	All OK	Problems met	Operation
	Check that the valve tappet clearance is correct. Op. 1036H14	Continue to Step 6	Clearance not correct	Restore the correct valve clearance. Op. 1036H18
6	CHECKING CYLINDER COMPRESSION	All OK	Problems met	Operation
	Carry out the cylinder compression test Op. 0510A10	Continue to Step 7	Compression values not correct	Restore the correct cylinder compression, for example by checking the seal of the injectors Op. 1056B70 and the cylinders (see OVERHAULING ENGINE, Subassembly 1004)
7	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists	Search for the fault starting from another symptom'