Knocking sound 3.0si

hoff900 · Post by **hoff900** » Sat Feb 03, 2024 4:35 pm

Hi,

Hopefully someone on here can help diagnose a knocking sound coming from the lower left hand side of my engine.

Car is a 2006 3.0si,

I know these are known for lifters making a sound, but don’t know if this is that or something more sinister.

Knocking car be heard towards the end of the video

https://youtube.com/shorts/eeyKhZ_l4c4? ... JK1ogZ7ASd

Many thanks

j3nks79 · Post by **j3nks79** » Sat Feb 03, 2024 7:02 pm

Impossible to hear on that clip.

jenniferlouise · Post by **jenniferlouise** » Sat Feb 03, 2024 7:11 pm

Have you a pheasant wrapped around the fan belt?? That’s the extent of my technical abilities. Sorry. Good luck.

Meds · Post by **Meds** » Sat Feb 03, 2024 8:03 pm

Is that low down rumble noise easier to hear from the drivers front wheel well?

I had the same offbeat clatter/rumble on a previous 130i with the same N52. Sometimes it was more obvious than other times.. but easier to hear when aiming your ears under the drivers front wheel well.

And no, it was not the clutch release bearing rattle..

I never diagnosed it, neither did my BMW mechanic.
It never got any worse over the 40k or so miles..

hoff900 · Post by **hoff900** » Sat Feb 03, 2024 8:19 pm

Meds wrote: ↑Sat Feb 03, 2024 8:03 pm Is that low down rumble noise easier to hear from the drivers front wheel well?

I had the same offbeat clatter/rumble on a previous 130i with the same N52. Sometimes it was more obvious than other times.. but easier to hear when aiming your ears under the drivers front wheel well.

And no, it was not the clutch release bearing rattle..

I never diagnosed it, neither did my BMW mechanic.
It never got any worse over the 40k or so miles..

Thanks, from the passengers wheel it can be heard, drivers side you can’t hear it

R17SKO · Post by **R17SKO** » Sat Feb 03, 2024 9:45 pm

jenniferlouise wrote: ↑Sat Feb 03, 2024 7:11 pm Have you a pheasant wrapped around the fan belt?? That’s the extent of my technical abilities. Sorry. Good luck.

That’s made me do a bit of a wee

enuff_zed · Post by **enuff_zed** » Sat Feb 03, 2024 9:52 pm

R17SKO wrote: ↑Sat Feb 03, 2024 9:45 pm
jenniferlouise wrote: ↑Sat Feb 03, 2024 7:11 pm Have you a pheasant wrapped around the fan belt?? That’s the extent of my technical abilities. Sorry. Good luck.
That’s made me do a bit of a wee

If it was that then it would be more of a flapping noise.

jenniferlouise · Post by **jenniferlouise** » Sun Feb 04, 2024 10:44 am

enuff_zed wrote: ↑Sat Feb 03, 2024 9:52 pm
R17SKO wrote: ↑Sat Feb 03, 2024 9:45 pm
jenniferlouise wrote: ↑Sat Feb 03, 2024 7:11 pm Have you a pheasant wrapped around the fan belt?? That’s the extent of my technical abilities. Sorry. Good luck.
That’s made me do a bit of a wee
If it was that then it would be more of a flapping noise.

Prob not after it had entered the grille at 70mph (at least, not for long!)

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