Engine knocking
- Make
- Fiat
- Model
- 500 Factory Service Manual
- Year
- 2007–2024
- Section
- Noise / vibrations › Engine knocking
ENGINE KNOCKING
The customer complains that: Irregular combustion noise, engine cylinder head knock
| Test results | ||||
| 0 | PRELIMINARY CHECKS | All OK | Problems encountered | Operation |
|---|---|---|---|---|
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. Check the condition of the fuel supply circuit and make sure that it is working properly. Check the operation of the low pressure supply circuit by carrying out the. | 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 | MODE PARAMETERS CHECK | All OK | Problems encountered | Operation |
Select the following control unit at the diagnostic equipment: Marelli 6F3 electronic injection control unit. Check the value of the following parameters:
| 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. | End of diagnosis | The result of the active diagnosis is negative. | Move on to Step 3 | |
| 3 | GLOW HEATER PLUGS CHECK | All OK | Problems encountered | Operation |
Check that the glow heater plugs are working properly, by carrying out the | ||||
Parts & tools for this job For 2007 Fiat 500
- PARTEngine gasket setSearch: Fiat 500 2007 engine gasket set
- TOOLTorque wrenchSearch: 3/8 inch torque wrench
- TOOLFeeler gauge setSearch: feeler gauge set
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