16 · Diagnostics

U01 Fuel smell from boot

Make: Alfa Romeo
Model: 156 Factory Service Manual
Year: 1997–2002
Section: Smells › U01 Fuel smell from boot

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Fault diagnosisU01 Fuel smell from boot

U01 Fuel smell from boot

With the car in motion, a smell is noted coming from the rear of the car, particularly after refuelling

Step	Test procedure	Result	Action
0	PRELIMINARY CHECKS First check for leaks from or damage to the fuel tank.	OK	Move onto step 1
0		Leaks from the fuel tank	Repair the fuel tank, or replace if necessary Op. 1040A14 End of diagnosis
1	CHECK AIR OUTLET FITTINGS Check the rear air vents. In particular ascertain: fin position (they should open outward) correct fitting	OK	Move onto step 2
1		fitting anomalies	Restore the fittings to the correct position Op. 5010C60 End of diagnosis
2	CHECK TANK VENT Check that the tank vent is positioned correctly	OK	Move onto step 3
2		Vent position incorrect	Reposition vent correctly Op. 1040A50 End of diagnosis
3	CHECK TANK FILLER FITTING Check the fuel tank filler; in particular: fitting compartment seal on wing fitting condition cap seal	OK	Move onto step 4
3		Filler or cap faulty	Repair fitting Op. 1040A30 Repair cap Op. 1040A40 End of diagnosis
4	CHECK PUMP COVER Check fuel pump/gauge cover gasket seal	OK	Move onto step 5
4		Seal worn, cover damaged	Replace the gasket or replace the cover Op. 1040A70 End of diagnosis
5	VAPOUR RECOVERY SYSTEM CHECK Check the vapour recovery system for leaks	OK	Move onto step 6
5		Leaks from vapour recovery system	Tighten fittings, clamps. Replace parts if necessary (see Assembly 1080E) End of diagnosis
5	VAPOUR RECOVERY SYSTEM CHECK	OK	Move onto step 6
5	VAPOUR RECOVERY SYSTEM CHECK	Not OK	End of diagnosis
6	CHECK BOOT FRAME SEAL Check that boot is sealed correctly.	OK	Move onto step 7
6		Boot seal faulty	Restore correct boot seal End of diagnosis
7	UNDERBODY CHECK Check that the underbody plugs in the boot area are present	OK	Move onto step 8
7		Underbody plugs missing	Refit missing plugs End of diagnosis
8	CORRECT OPERATION CHECK Check that the fault is no longer present	OK	End of diagnosis
8		Fault persists	Incorrect selection of diagnostic procedure

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Parts & tools for this job For 1997 Alfa Romeo 156

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