184000595 - W11 EXCESSIVE EXHAUST FUMES

Exhaust fume levelsl highs, with dense smoke and presence of particulate.
Results of the tests
0PRELIMINARY CHECKSAll OKProblems metOperation

Preliminarily check:

  • the engine oil level
  • the condition of the air filter
Continue to Step 1Oil level too highTop up the engine oil level
Filter element dirty or damagedReplace the filter element Op. 1048A14
1CHECK WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Connect an Examiner tester to the tester connection and check the engine management node.

In errors ambient:

  • that there are no faults;

In parameter mode

  • the plausibility of all the parameters.
Continue to Step 2An error is detected in the control unitContinue following the instructions for the diagnostic equipment
Unreliable parametersContinue following the instructions for the diagnostic equipment
2CHECKING BLOW-BY CIRCUITAll OKProblems metOperation
Check the condition of the blow-by gases intake circuit. In particular, check that there are no obstructions in the separator or in the pipesContinue to Step 3Fault in the pipe from separator to intakeRestore the correct operation of the circuit: if necessary, replace the pipes
Fault in the separatorRestore the correct operation of the circuit; if necessary replace the rocker cover
3CHECK AIR CIRCUITAll OKProblems metOperation
Check the condition and seal of the air supply circuitContinue to Step 4Circuit component damagedReplace the damaged component
4EGR actuator checkAll OKProblems metOperation
Carry out active diagnosis of EGR control solenoidContinue to Step 7Actuator not workingContinue to Step 5
5EGR ELECTRICAL CIRCUIT CHECKAll OKProblems metOperation
Check continuity/insulation of connections between engine control unit and EGR solenoid See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT Continue to Step 6Electrical connection faultRestore the connections See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
6EGR ASSEMBLY OPERATION CHECKAll OKProblems metOperation
Detach actuator from vehicle and dismantle the valve unit to check correct operation.Continue to Step 9Valve blocked openEliminate the cause of the blockage and replace the actuator if necessary
Valve free, solenoid defectiveReplace actuator Op. 1080C26
7CHECK ON CYLINDER COMPRESSIONAll OKProblems metOperation
Carry out the cylinder compression testContinue to Step 9Cylinder compression insufficientContinue to Step 8
8CHECK ON CAUSE OF INSUFFICIENT COMPRESSIONAll OKProblems metOperation
Carry out R.R. on head to check the valve sealCheck the condition of the cylinders/piston ringsContinue to Step 9Insufficient valve sealOverhaul the cylinder head Op. 1016E10
Wear on cylinders/piston rings outside toleranceRestore the correct clearances
9CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosis