22 · Diagnostics

Excessive exhaust fumes

Make: Fiat
Model: Grande Punto Factory Service Manual
Year: 2005–2012
Section: Emissions › Excessive exhaust fumes

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Fault diagnosisExcessive exhaust fumes

EXCESSIVE EXHAUST FUMES

1.9 Multijet

The customer complains of: Excessive blue fumes

0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
		Test results
	Check that the engine oil level is correct Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARY Check that the air intake/vacuum circuit is working properly by carrying out the See Test 1048OA AIR INTAKE/VACUUM CIRCUIT CHECK Check the condition of the fuel supply circuit and make sure that it is working properly See Test 1040OA FUEL SUPPLY CIRCUIT CHECK Check the operation of the low pressure supply circuit See Test 1060OB LOW FUEL DELIVERY PRESSURE CIRCUIT CHECK	Move on to Step 1	Oil level incorrect	Restore the correct engine oil level Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARY
1	AMBIENT PARAMETERS CHECK	All OK	Problems encountered	Operation
	Select the following control unit at the diagnostic equipment: Diesel electronic injection control unit EDC16C39 CF4/EOBD CAN (EP engine 1.9). Check the value of the following parameters: . Battery voltage See Test 5530BB BATTERY VOLTAGE CHECK - Measured air mass See Test 1060GG CHECK MEASURED AIR MASS . Atmospheric pressure See Test 1060GD ATMOSPHERIC PRESSURE CHECK . Engine coolant temperature See Test 1060OE ENGINE COOLANT TEMPERATURE SENSOR OPERATION CHECK . Diesel temperature See Test 1060EA DIESEL TEMPERATURE CHECK . Engine rpm See Test 1060GI CHECK ENGINE SPEED	Move on to Step 2
2	PREHEATING RELAY ACTIVE DIAGNOSIS	All OK	Problems encountered	Operation
	Carry out the active diagnosis for the preheating relay, checking that the result is positive. The check on the following system is only necessary if the outside temperature is below 0 °C.	Move on to Step 4	The result of the active diagnosis is negative	Move on to Step 3
3	HEATER PLUGS CHECK	All OK	Problems encountered	Operation
	Check that the heater plugs are working properly See Test 5520CA CHECK GLOW PLUG OPERATION	Move on to Step 4
4	ELECTRICAL EQUIPMENT CHECK	All OK	Problems encountered	Operation
	Check that fuse F59 has not blown (second from the left on the second row from the bottom)	Move on to Step 5	Fuse F59 has blown	Restore the connections or, if necessary, replace the junction unit in the engine compartment Op. 5505A13 ADDITIONAL JUNCTION UNIT IN ENGINE COMPARTMENT - R.R.
5	CYLINDER COMPRESSION CHECK	All OK	Problems encountered	Operation
	Carry out the cylinder compression check Op. 0510A10 CYLINDER COMPRESSION - CHECK FOR LOOSE SPARK PLUGS OR INJECTORS	End of diagnosis	Cylinder compression insufficient	Move on to Step 6
6	CHECK ON CAUSE OF INSUFFICIENT COMPRESSION	All OK	Problems encountered	Operation
	Carry out the Op. 1016C10 SINGLE CYLINDER HEAD - R.R. AND REPLACE GASKET to check the valve seal Check condition of cylinders/piston rings	End of diagnosis	Valve seal insufficient	Overhaul the head Op. 1016E10 SINGLE CYLINDER HEAD, REMOVED - OVERHAUL
		End of diagnosis	Cylinder/ring wear outside tolerances	Restore correct operating clearances

1.3 Multijet

The customer complains of: Excessive blue fumes

0	PRELIMINARY CHECKS	All OK	Problems encountered	Operation
		Test results
	Check that the engine oil level is correct Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARY Check the condition of the fuel supply circuit and make sure that it is working properly Op. 1040OA Check that the air intake/vacuum circuit is working properly Op. 1048OA	Move on to Step 1	Oil level incorrect	Restore the correct engine oil level Op. 0010T11 ENGINE OIL - CHECK LEVEL AND TOP UP, IF NECESSARY
1	AMBIENT PARAMETERS CHECK	All OK	Problems encountered	Operation
	Select the following control unit at the diagnostic equipment: Diesel Injection Marelli 6F3 EOBD CAN (EP 1.3 JTD engine). Check the value of the following parameters: - Coolant temperature See Test 1060OE ENGINE COOLANT TEMPERATURE SENSOR OPERATION CHECK - Diesel temperature See Test 1060EA DIESEL TEMPERATURE CHECK - Air temperature (flow meter) See Test 1060GK CHECK CONTROL UNIT SOFTWARE AND HARDWARE - Measured diesel pressure See Test 1060GH DIESEL PRESSURE CHECK - Pressure regulator opening (MPROP) See Test 1060GR CHECK OPERATION OF FUEL PRESSURE SENSOR ON RAIL	Move on to Step 2
2	PREHEATING RELAY ACTIVE DIAGNOSIS	All OK	Problems encountered	Operation
	Carry out the active diagnosis of the preheating relay, checking that the result is positive The check on the following system is only necessary if the outside temperature is below 0 °C.	Move on to Step 4	The result of the active diagnosis is negative	Move on to Step 3
3	HEATER PLUGS CHECK	All OK	Problems encountered	Operation
	Check that the heater plugs are working properly See Test 5520CA CHECK GLOW PLUG OPERATION	Move on to Step 4
4	CYLINDER COMPRESSION CHECK	All OK	Problems encountered	Operation
	Carry out the cylinder compression check Op. 0510A10 CYLINDER COMPRESSION - CHECK FOR LOOSE SPARK PLUGS OR INJECTORS	End of diagnosis	Cylinder compression insufficient	Move on to Step 5
5	CHECK ON CAUSE OF INSUFFICIENT COMPRESSION	All OK	Problems encountered	Operation
	Check the valve seal Op. 1016C10 SINGLE CYLINDER HEAD - R.R. AND REPLACE GASKET Check condition of cylinders/piston rings	End of diagnosis	1. Valve seal insufficient 2. Cylinder/ring wear outside tolerances	1. Overhaul the head Op. 1016E10 SINGLE CYLINDER HEAD, REMOVED - OVERHAUL 2. Restore correct operating clearances

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Parts & tools for this job For 2005 Fiat Grande Punto

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