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Fiat Stilo Factory Service Manual (2001-2007)22 · Fault diagnosis
22 · Diagnostics

Excessive smokiness at exhaust terminal

Make
Fiat
Model
Stilo Factory Service Manual
Year
2001–2007
Section
Climate control › Excessive smokiness at exhaust terminal
Fault diagnosisExcessive smokiness at exhaust terminal

EXCESSIVE SMOKINESS AT EXHAUST TERMINAL

Supplementary heater exhaust is excessively smoky during operation.

Results of the tests
0PRELIMINARY CHECKAll OKProblems metOperation
Check the air intake port is not blocked or damaged.Continue to Step 1Air port blocked.Remote the obstruction from the air port
Air port damagedChange the air port
1CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation
Connect the diagnostic equipment (Examiner) check the CO2 input value is within set values while in parameter mode.Continue to Step 2CO2 input values outside normal rangeCalibrate the CO2 input values
2CHECKING WITH DIAGNOSTIC EQUIPMENTAll OKProblems metOperation

Keep the Examiner diagnostic equipment connected and check for errors:

  • in the spark plugs
  • in the air intake motor
  • in the fuel pump
End of diagnosisSpark plug or air intake motor not workingContinue to Step 4
Spark plug or air intake motor not workingContinue to Step 3
3CHECKING CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisThe fault persistsChange the fuel pump Op. 5020M30
4CHECKING CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosisThe fault persists

Change the supplementary heaterOp. 5020M10

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Parts & tools for this job For 2001 Fiat Stilo

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