Engine'buzzing
- Make
- Alfa Romeo
- Model
- 147 Factory Service Manual
- Year
- 2000–2004
- Section
- Noisy / vibrations › Engine'buzzing
Fault diagnosisEngine'buzzing
ENGINE'BUZZING
Replace the mobile belt tensioner
| Results of the tests | ||||
| 0 | PRELIMINARY CHECKS | All OK | Problems met | Operation |
|---|---|---|---|---|
| Check the condition and seal of the air supply circuit | Continue to Step 1 | Circuit component damaged | Replace the component involved | |
| 1 | CHECK ON CONDITION OF ENGINE SUPPORTS | All OK | Problems met | Operation |
Check the correct fixing and condition of:
| Continue to Step 2 | Engine supports fixing not correct | Restore the correct fastening | |
| Gearbox side engine support defective | Replace the gearbox side engine support Op. 1008A42 | |||
| Timing side engine support defective | Replace the timing side engine support Op. 1008A46 | |||
| Front support flexible mounting faulty | Replace the front support flexible mounting Op. 1008B10 | |||
| Rear support flexible mounting faulty | Replace the rear support flexible mounting Op. 1008B20 | |||
| Gearbox side support flexible mounting faulty | Replace gearbox side support flexible mounting Op. 1008B30 | |||
| Reaction rod fixing not correct | Restore the correct fastening | |||
| 2 | ENGINE EXHAUST SUPPORTS CHECK | All OK | Problems met | Operation |
| Check that the exhaust pipe mountings are fixed correctly | Continue to Step 3 | Mountings loose | Secure the mountings | |
| Mounting damaged | Replace the mounting | |||
| 3 | CHECKING ENGINE EXHAUST | All OK | Problems met | Operation |
Check the engine exhaust system and, in particular:
| Continue to Step 4 | Pipe damaged | Replace the pipe Op. 1076B12 | |
| Intermediate silencer damaged | Replace the intermediate silencer Op. 1076B26 | |||
| Rear silencer damaged | Replace the rear silencer Op. 1076B22 | |||
| Front gasket worn or damaged | Replace the front gasket Op. 1076B34 | |||
| Rear gasket worn or damaged | Replace the rear gasket | |||
| 4 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation |
| Check that the fault is no longer present | Fault persists | Search for the fault starting from another symptom' | ||
Parts & tools for this job For 2000 Alfa Romeo 147
- PARTEngine gasket setSearch: Alfa Romeo 147 2000 engine gasket set
- TOOLTorque wrenchSearch: 3/8 inch torque wrench
- TOOLFeeler gauge setSearch: feeler gauge set
Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.