- From bearings
- From mechanical seals
- Impeller interference
|
After starting the engine, check noise with a stethoscope. |
If there is no noise, reuse the water pump (do not replace it). |
| If there is any noise from the water pump, remove the drive belt and recheck. |
| After removing the water pump and the drive belt, check noise again. |
If there is noise, reuse the water pump. Check other drive line parts. |
| If there is no noise, replace the water pump with a new one. |
| If there is any interference between them, replace the water pump with a new one. |