| | Results
of the tests |
| 0 | PRELIMINARY CHECKS | All OK | Problems met | Operation |
|---|
| Check
the type of fuelPreliminarily check that there is no water or other fluids in
the fuel tank |
Continue to Step
1
| Presence of dirt in the
fuel tank |
Clean the fuel tank
Op. 1040A10 |
| Fuel unsuitable |
Clean the fuel tank
Op. 1040A10
and fill with suitable
fuel
|
| 1 | TYPE OF NOISE CHECK | All OK | Problems met | Operation |
|---|
| Carry
out a road test and check whether the noise sounds metallic during
brisk acceleration and using long ratios | Metallic sound:
Continue to Step
2
| Duller sound: probably knocking |
Overhaul the engine: check
the condition of the main bearings and replace them:
Op. 1024A10 |
| 2 | CHECK WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation |
|---|
| Connect
the diagnostic equipment (Examiner or other instruments) to the
diagnostic socket Check: - that there are no faults in the engine management control
unit
- plausibility of all the parameters
|
Continue to Step
3
| An error is detected in
the control unit | Continue according to the instructions for the diagnostic
equipment |
| Lack of dialogue with the control unit | Restore the connection between the engine management
control unit and the diagnostic connector See E5030 PETROL ENGINE ELECTRONIC MANAGEMENT |
| 3 | PISTON CROWN CHECK | All OK | Problems met | Operation |
|---|
| Remove
the cylinder head and check the condition of the piston crowns |
Continue to Step
4
| Deposits on the piston
crowns | Remove
the deposits or replace the pistons and connecting rods (see Assembly
1028H) |
| 4 | CHECK CORRECT OPERATION | All OK | Problems met | Operation |
|---|
| Check
that the fault is no longer present | End of diagnosis | Fault persists | Search for
the fault starting from another symptom' |
