Wiring;

Connectors;

High tension lead continuity See

See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT

Restore the correct connections See

See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT

. Replace any fault components, if necessary.

Move on to Step 10

Visually inspect the operation of the coil connected to the cylinder involved using the Examiner spark gap 1806369000.

In particular, check that there is a regular spark

Check that the spark plug electrode gap is within the permitted limits.

Also check that the electrodes are not worn/broken

Replace the spark plug Op.

Op. 5510D10 SPARK PLUGS - R+R

Move on to Step 10

Carry out a fuel pressure test Op.

Op. 0510C10 FUEL SYSTEM - CHECK DELIVERY PRESSURE

, by turning the ignition ON and waiting a few seconds. Then, start up normally and turn the ignition OFF after a few seconds.

Check that the pressure remains at the normal values and there are no falls of more than 1.5 bar 15 minutes after switching off.

Remove the injector flute complete with all the injectors Op.

1056B62

. Place a container under the injector flute.

Renew or, if necessary, replace the pipe.

Move on to Step 10

Replace the fuel pump assembly Op.

Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GUAGE CONTROL - R + R

Move on to Step 10

Turn the ignition ON and then turn it OFF after a few seconds.

Check that there are no fuel leaks from the injector involved.

Then refit the injector flute Op.

1056B62

Work very carefully and in safe conditions

Replace the injector Op.

1056B70

Move on to Step 10

Replace the fuel pump assembly Op.

Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GUAGE CONTROL - R + R

Carry out the active diagnosis of the injector involved, checking that there is a spray from the injector during activation. Then refit the injector flute Op.

1056B62

Replace the injector Op.

1056B70

Move on to Step 10

Carry out a compression test on the cylinder involved Op.

Op. 0510A10 CYLINDER COMPRESSION - CHECK FOR LOOSE SPARK PLUGS OR INJECTORS

R/R heads for valve leakage test

Check condition of cylinders/piston rings

Overhaul the heads Op.

Op. 1016E26 CYLINDER HEADS - OVERHAUL

Move on to Step 10

Restore the seal.

Move on to Step 10

Exchange the coil involved with one for another cylinder Op.

Op. 5510C14 IGNITION COIL/S - R+R

and check that there is a regular spark using the Examiner spark gap 1806369000

Repair the old coil and replace the engine management control unit Op.

1056B82

Move on to Step 10

Using the diagnostic equipment, cancel the errors in the control unit.

Road test the vehicle and check that the errror does not occur again

Check that the ignition circuit connection is correct and is working properly, paying special attention to:

• wiring;
• connectors;

• high tension lead continuity See

  See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT

Restore the correct connections See

See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT

Replace any fault components, if necessary.

Move on to Step 10 1

Visually inspect the operation of the coil connected to the cylinder involved using the Examiner spark gap 1806369000.

In particular, check that there is a regular spark

Check that the spark plug electrode gap is within the permitted limits.

Also check that the electrodes are not worn/broken

Replace the spark plug Op.

Op. 5510D10 SPARK PLUGS - R+R

Move on to Step 10 1

Carry out a fuel pressure test Op.

Op. 0510C10 FUEL SYSTEM - CHECK DELIVERY PRESSURE

, by turning the ignition ON and waiting a few seconds. Then, start up normally and turn the ignition OFF after a few seconds.

Check that the pressure remains at the normal values and there are no falls of more than 1.5 bar 15 minutes after switching off. Remove the injector flute complete with all the injectors Op.

Op. 1056B60 TUBO COLLETTORE COMBUSTIBILE UNICO, COMPLETO DI ELETTROINIETTORI - S.R.

Place a container under the injector flute.

Renew or, if necessary, replace the pipe.

Move on to Step 10 1

Replace the fuel pump assembly Op.

Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GUAGE CONTROL - R + R

Move on to Step 10 1

Turn the ignition key ON and then OFF after a few seconds. Check that there are no fuel leaks from the injector involved by carrying out Test 1056BZ

See Test 1056 PETROL INJECTION SYSTEM

Then refit the injector flute

Op. 1056B60 TUBO COLLETTORE COMBUSTIBILE UNICO, COMPLETO DI ELETTROINIETTORI - S.R.

Work very carefully and in safe conditions

Replace the injector Op.

Op. 1056B70 ELETTROINIETTORE (UNO) - S.R. A TUBO COLLETTORE COMBUSTIBILE STACCATO - COMPRENDE LA SOST. DELLA GUARNIZIONE

Move on to Step 10 1

Replace the fuel pump assembly Op.

Op. 1040A70 SUBMERGED PUMP ASSEMBLY COMPLETE WITH LEVEL GUAGE CONTROL - R + R

Carry out the active diagnosis of the injector involved, checking that there is a spray from the injector during activation. Then refit the injector flute Op.

Op. 1056B60 TUBO COLLETTORE COMBUSTIBILE UNICO, COMPLETO DI ELETTROINIETTORI - S.R.

Replace the injector Op.

Op. 1056B70 ELETTROINIETTORE (UNO) - S.R. A TUBO COLLETTORE COMBUSTIBILE STACCATO - COMPRENDE LA SOST. DELLA GUARNIZIONE

Move on to Step 10 1

Carry out a compression test on the cylinder involved Op.

Op. 0510A10 CYLINDER COMPRESSION - CHECK FOR LOOSE SPARK PLUGS OR INJECTORS

R/R head for valve leakage test

Check condition of cylinders/piston rings

Overhaul the cylinder head Op.

Op. 1016E10 SINGLE CYLINDER HEAD, REMOVED - OVERHAUL

Move on to Step 10 1

Restore the seal.

Move on to Step 10 1

Exchange the coil involved with one for another cylinder

Op. 5510C10 IGNITION COIL/S - R+R

and check that there is a regular spark using the Examiner spark gap 1806369000

Repair the old coil and replace the engine management control unit Op.

Op. 1056B82 CENTRALINA (UNICA) DELL''IMPIANTO INIEZIONE/ACCENSIONE - S.R.

Move on to Step 10 1

Using the diagnostic equipment, cancel the errors in the control unit.

Road test the vehicle and check that the errror does not occur again