lc150-fan
New Member
- Joined
- Jan 4, 2024
- Messages
- 4
- Country Flag
Hi all,
The question is related to LC 150 3.0 140kw from 2011.
Anyone had this whining noise (at 0:11-0:12 sec):
Currently the car has 214.000 km on the clock, injectors done at 172.000 km.
The new injectors are within spec (within -1, +1 interval).
The car runs just fine, no trouble codes or lack of power.
Some findings:
- the noise is present only when the engine is cold. After it warms up (70C+) no such noise.
- when the engine is already warmed up 70C+, no noise at all.
- the noise is not continious. When stationary if I rev up and then leave it idle, no noise. Also, after accelerating when driving constant speed (as on the video) after 2-3 sec I hear it. But after, if I drive same speed I don't notice it, only after accelerating.
One mechanic told me it could be "air in fuel supply pump".
So my questions are:
1) Anyone has ever faced with the same problem/sound/noise?
2) What could be the issue when it only happens on cold engine?
... the thing is that I already found two other people with the same problem (whining noise). The noise is the same but in their engine it is more frequent. Also they have it only on cold engine.
Any ideas?
Thanks.
The question is related to LC 150 3.0 140kw from 2011.
Anyone had this whining noise (at 0:11-0:12 sec):
Currently the car has 214.000 km on the clock, injectors done at 172.000 km.
The new injectors are within spec (within -1, +1 interval).
The car runs just fine, no trouble codes or lack of power.
Some findings:
- the noise is present only when the engine is cold. After it warms up (70C+) no such noise.
- when the engine is already warmed up 70C+, no noise at all.
- the noise is not continious. When stationary if I rev up and then leave it idle, no noise. Also, after accelerating when driving constant speed (as on the video) after 2-3 sec I hear it. But after, if I drive same speed I don't notice it, only after accelerating.
One mechanic told me it could be "air in fuel supply pump".
So my questions are:
1) Anyone has ever faced with the same problem/sound/noise?
2) What could be the issue when it only happens on cold engine?
... the thing is that I already found two other people with the same problem (whining noise). The noise is the same but in their engine it is more frequent. Also they have it only on cold engine.
Any ideas?
Thanks.