2751133 - W11 EXCESSIVE EXHAUST FUMES'

There are a great deal of exhaust fumes, with dense smoke and a higher level of particulate than specified.
Results of the tests
0PRELIMINARY CHECKSAll OKProblems metOperation

First check:

  • the condition of the air filter
  • leaks from intake manifolds after the compressor
Continue to Step 1Filter element dirty or damagedReplace the filter element Op.   1048A14 
Leaks from intake manifoldsRenew the seal
1CHECK WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation

Connect an Examiner tester to the tester connection and check the engine control node:

  • for faults in error mode;
  • for plausibility of all parameters in parameter mode;
Check that the preheating system is working properly by carrying out active diagnosis
Continue to Step 2Presence of one of the following errors: P0101, P1102Continue to Step 2
Presence of error P0400Continue to Step 4
An error is detected in the control unitContinue following the instructions for the diagnostic equipment
Unreliable parametersContinue following the instructions for the diagnostic equipment
Fault in preheating systemRestore correct operation
2CHECK FLOW METERAll OKProblems metOperation
Using an Examiner, check that the sensor is working properly by carrying out the test See Test   1060GB  Check on operation of air flow meter Continue to Step 3Flow meter signal too highReplace the flow meter
3CHECK AIR CIRCUITAll OKProblems metOperation
Check the condition and seal of the air supply circuitContinue to Step 4Circuit component damagedReplace damaged component
4EGR actuator checkAll OKProblems metOperation
Carry out active diagnosis of EGR control solenoidContinue to Step 6Actuator 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 6Check continuity/insulation of connections between engine control unit and EGR solenoid Restore the connections See   E5050  DIESEL ENGINES ELECTRONIC MANAGEMENT
1.3 JTD Air ConditionerCarry out R/R on head Op.   1016C11  to check the valve sealCheck the condition of the cylinders/piston ringsContinue to Step 6Insufficient valve sealOverhaul the cylinder head Op.   1016E10 
6EGR ASSEMBLY OPERATION CHECKAll OKProblems metOperation
Detach actuator from vehicle and dismantle the valve unit to check correct operation.Continue to Step 7Valve 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 diagnosisEnd of diagnosis