Workshop Manuals Factory service & repair

Fiat Bravo Factory Service Manual (2007-2014)22 · Fault diagnosis

22 · Diagnostics

White exhaust fumes

Make: Fiat
Model: Bravo Factory Service Manual
Year: 2007–2014
Section: Emissions › White exhaust fumes

‹ Prev Co emissions low, nox emissions high Next › Black exhaust fumes

Fault diagnosisWhite exhaust fumes

WHITE EXHAUST FUMES

1.9 JTD 8v, 1.9 JTD 16v

A high level of pale-coloured exhaust fumes is noted

0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
	First of all, check for water or other fluids in the fuel tank.	Move on to Step 1	Presence of dirt in the fuel tank	Clean the fuel tank
1	CHECK USING DIAGNOSTIC EQUIPMENT	All OK	Problems encountered	Operation
	Connect the diagnostic equipment (Examiner or other instruments) to the diagnostic socket and check that there are no faults in the engine management control unit.	Move on to Step 2	Error detected in the control unit	Continue following the instructions given by the diagnostic equipment.
		Move on to Step 2	No communication with the control unit.	Restore the connection between the engine management control unit and the diagnostic connector See E5050 DIESEL ENGINES ELECTRONIC MANAGEMENT
2	BLOW-BY CIRCUIT CHECK	All OK	Problems encountered	Operation
	Check the condition of the blow-by gas intake circuit. In particular, check for obstructions in the separator or pipes	Move on to Step 3	Fault in the blow-by circuit.	Restore circuit to working order: replace the pipes if necessary.
3	TURBOCHARGER OPERATION/CONDITION CHECK	All OK	Problems encountered	Operation
	Check operation and for lubricant oil leaks.	Move on to Step 4	Turbocharger inefficient.	Replace the turbocharger Op. 1064A27 PIPE BETWEEN VACUUM RESERVOIR AND ACTUATOR CONTROL SOLENOID VALVE - R.R.
4	CYLINDER COMPRESSION CHECK	All OK	Problems encountered	Operation
	Carry out cylinder compression test Op. 0520G15 COMPRESSION TEST - CHECK WITH EXAMINER WITH SPARK PLUGS/INJECTORS REMOVED	Move on to Step 5	Cylinder compression insufficient.	Move on to Step 6
5	CHECK CYLINDER HEAD GASKET AND VALVE OIL SEALS	All OK	Problems encountered	Operation
	Check: - that the cylinder head is correctly tightened; - the seal of the gasket; - the seal of the valve oil seals.	Move on to Step 7	Cylinder head tightening not correct.	Restore the correct cylinder head tightening.
			Gasket damaged.	Head gasket replacement Op. 1016C10 SINGLE CYLINDER HEAD - R.R. AND REPLACE GASKET
			Oil seal missing.	Restore the correct oil seal.
6	CHECK ON CAUSE OF INSUFFICIENT COMPRESSION	All OK	Problems encountered	Operation
	After having removed the cylinder head Op. 1016C10 SINGLE CYLINDER HEAD - R.R. AND REPLACE GASKET check: - the valve seal; - cylinder/piston ring wear.	Move on to Step 7	Valve seal insufficient.	Overhaul the cylinder head.
		Move on to Step 7	Cylinder/ring wear outside tolerance.	Restore correct operating clearance.
7	CORRECT OPERATION CHECK	All OK	Problems encountered	Operation
	Check that the fault is no longer present.	End of diagnosis	The fault persists.	Contact technical service for further information on the problem.

‹ Prev Co emissions low, nox emissions high Next › Black exhaust fumes

Parts & tools for this job For 2007 Fiat Bravo

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