312002008 - S011 ENGINE BUZZING
 | There is a loud noise of constant intensity coming from the engine, and only heard within a specific field of rpm. |
| Test results | ||||
| 0 | PRELIMINARY CHECKS | All OK | Problems encountered | Operation |
|---|---|---|---|---|
| Check the condition and seal of the air supply circuit | Move on to Step 1 | Circuit component damaged. | Replace the damaged component. | |
| 1 | ENGINE MOUNTINGS CONDITION CHECK | All OK | Problems encountered | Operation |
Check the correctly fastening and condition of:
| Move on to Step 2 | 1. Incorrect fastening of engine mountings2. Gearbox-side engine mounting defective3. Timing-side engine mounting defective4. Rear engine mounting defective5. Front support flexible mounting defective6. Rear support flexible mounting defective7. Gearbox-side support flexible mounting defective8. Reaction link incorrectly fastened. | 1. Restore the correct fastening2. Replace the gearbox-side engine mounting Op. 1008A42 POWER UNIT RIGID SUPPORT - GEARBOX SIDE - R.R. 3. Replace the timing-side engine mounting Op. 1008A46 POWER UNIT RIGID SUPPORT - TIMING SIDE - R.R. 4. Replace the rear engine mountingOp. 1008A44 POWER UNIT REAR RIGID SUPPORT - R.R.5. Replace the front support flexible mounting Op. 1008B10 POWER UNIT FRONT SUPPORT FLEXIBLE MOUNTING (TIMING SIDE) - REPLACE 6. Replace the rear support flexible mountingOp. 1008B20 POWER UNIT REAR SUPPORT FLEXIBLE MOUNTING - REPLACE7. Replace the gearbox-side support flexible mounting Op. 1008B30 GEARBOX SIDE SUPPORT FLEXIBLE MOUNTING(S) - REPLACE 8. Renew the correct fastening. | |
| 2 | ENGINE EXHAUST MOUNTINGS CHECK | All OK | Problems encountered | Operation |
| Check that the exhaust pipe mountings are correctly fastened. | Move on to Step 3 | 1. Mountings loose.2. Mounting damaged. | 1. Restore the correct fastening of the mountings.2. Replace the damaged component. | |
| 3 | ENGINE EXHAUST CHECK | All OK | Problems encountered | Operation |
Check the engine exhaust system, in particular:
| End of diagnosis | 1. Pipe assembly damaged.2. Rear silencer damaged.3. Front gasket worn or damaged. | 1. Replace the pipe assembly2. Replace the rear silencer Op. 1076B20 REAR EXHAUST SILENCER - R + R 3. Replace the front gasket | |