Workshop Manuals Factory service & repair Alfa Romeo
01 General data and specifications02 Engine (Twin Spark, JTD and V6)03 Clutch04 Gearbox (manual, Selespeed and Q-System)05 Front axle06 Brakes, ABS and traction control07 Steering08 Suspension and wheels09 Heating, air conditioning and washers10 Electrical equipment11 Body12 Body panels and reinforcement13 Wiring diagrams14 Connectors and pin-outs15 Wiring harnesses16 Fault diagnosis17 Special tools
Alfa Romeo 156 Factory Service Manual (1997-2002)16 · Fault diagnosis
16 · Diagnostics

U03 Exhaust gas smell from boot (S.W.)

Make
Alfa Romeo
Model
156 Factory Service Manual
Year
1997–2002
Section
Smells › U03 Exhaust gas smell from boot (S.W.)
Fault diagnosisU03 Exhaust gas smell from boot (S.W.)

U03 Exhaust gas smell from boot (S.W.)

With the car in motion, a smell of exhaust gas is noted coming from the rear area.

StepTest procedureResultAction
1AIR VENTS CHECK

Check the rear air outlet vents. In particular, ascertain:

  • Seal of fins (they should open outwards)
  • correct fitting
OK

Move onto step 2

fitting anomalies

End of diagnosis

2TAILGATE SEAL MATCHING CHECK

Check that the seal matches the tailgate. In particular, make sure that the seal is not wrinkled.

Also check that no exhaust gases are penetrating through the openings in the lower part of the tailgate.

OK

Move onto step 3

Fitting of seal incorrect
  • Fit the sealing strip correctly

End of diagnosis

3CHECK TAIL-GATE ALIGNMENT

Check the fitting of the tailgate. In particular, check the boot compartment alignment, ensuring that the sealing strip is in contact around the entire perimeter.

OK

Move onto step 4

Tailgate fitting faulty
  • Refit the tail-gate correctly

End of diagnosis

4LUGGAGE COMPARTMENT SEALANT CHECK

Check that the luggage compartment sealant is correct

OK

Move onto step 5

Luggage compartment sealant faulty
  • Restore the correct luggage compartment sealant

End of diagnosis

5UNDERBODY CHECK

Check that the underbody plugs are fitted, in the luggage compartment housing

OK

Move onto step 6

Underbody plugs missing
  • Refit missing plugs

End of diagnosis

6CORRECT OPERATION CHECK

Check that the fault is no longer present

OK

End of diagnosis

Fault persists

Incorrect selection of diagnostic procedure

Parts & tools for this job For 1997 Alfa Romeo 156

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