D10 Irregular engine idle speed (page 2 of 2)
- Make
- Fiat
- Model
- Seicento Factory Service Manual
- Year
- 1998–2010
- Section
- Engine
DiagnosisD10 Irregular engine idle speed · page 2 of 2
(Continued Irregular engine idle speed)
| Step | Validity Operation to be performed | Test results | ||
|---|---|---|---|---|
| OK | ⚠ | 🔧 | ||
| 4 | CHECK BRAKE BOOSTER VACUUM PIPE | All OK Go to Step 5 |
Problems found | Intervention |
| Check intactness of vacuum pipes, union pipes and clips | Faulty fastening or part. | Restore fasteners or replace faulty parts | ||
| Damaged pipe | Replace vacuum pipe PROCEDURE OP. 3330D24 |
|||
| 5 | CHECK FUEL PRESSURE | All OK Go to Step 6 |
Problems found | Intervention |
| Check the fuel supply pressure PROCEDURE OP. 0510C10 |
Incorrect pressure | Check the circuit components in sequence: – fuel filter PROCEDURE OP. 1044B10 – pressure regulator – fuel hoses PROCEDURE 1040 B |
||
| 6 | CHECK CYLINDER COMPRESSION | All OK Go to Step 7 |
Problems found | Intervention |
| Perform the cylinder compression test PROCEDURE OP. 0510A10 |
Incorrect compression values | Restore correct cylinder compression values | ||
| 7 | CHECK TIMING | All OK Go to Step 8 |
Problems found | Intervention |
| Check correct engine timing PROCEDURE OP. 0510A20 |
Incorrect timing | Restore correct engine timing PROCEDURE OP. 1032B10 or PROCEDURE OP. 1032B14 |
||
| 8 | CHECK CORRECT OPERATION | All OK End of test |
Problems found | Intervention |
| Check the fault is no longer present | – | – | ||
Parts & tools for this job For 1998 Fiat Seicento
- PARTEngine gasket setSearch: Fiat Seicento 1998 engine gasket set
- TOOLTorque wrenchSearch: 3/8 inch torque wrench
- TOOLFeeler gauge setSearch: feeler gauge set
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