Suspected waste gate rattle

P

Pooltee

Member
Good evening all

I have had a bit of a rattle on my Z from cold for a while now, but it is starting to get progressively worse.

When starting the car from cold, there is a very metallic rattle coming from around the turbo area. Makes the car sound horrible. After about 2 minutes the noise does go away mainly, but can be heard if you blip the throttle.

I can find lots of waste gate issues relating to the 6 pot, but nothing on here for the N20.

Has anybody experienced the same, and is there a fix that doesn’t include a new turbo.

Cheers, Paul
 
The timing chain generally is more of a whine rather than rattle..

https://bmwtechnician.com/2016/08/07/n20-timing-chain-issue/
 
This is very much a rattle. Best way I can explain it is like keys rattling against a can. Only really noticeable for the first couple of minutes on cold start, or if you give the engine a sharp rev when warmed up.

Listening around the timing chain area there are no unwanted noises at all.
 
In the US they issued an emergency service bulletin for this ..

Some comments here about it..

https://f30.bimmerpost.com/forums/showthread.php?t=1394012

https://f30.bimmerpost.com/forums/showthread.php?t=1635210

Service bulletin. https://static.nhtsa.gov/odi/tsbs/2018/MC-10154818-9999.pdf
 
Interesting reading. The video in the second link you posted is exactly how my car sounds on cold start ( bloody awful), so it looks like I will be having the turbo off soon and see if the modified part sorts the issue.

Always something isn’t there! :rofl:
 
Pooltee said:
Interesting reading. The video in the second link you posted is exactly how my car sounds on cold start ( bloody awful), so it looks like I will be having the turbo off soon and see if the modified part sorts the issue.

Always something isn’t there! :rofl:
Click to expand...

You may want to temporarily change your signature too. :poke:
I'm sure someone had a rant about it a while back and you don't want to give out ammunition. :wink:
 
enuff_zed said:
Pooltee said:
Interesting reading. The video in the second link you posted is exactly how my car sounds on cold start ( bloody awful), so it looks like I will be having the turbo off soon and see if the modified part sorts the issue.

Always something isn’t there! :rofl:
Click to expand...

You may want to temporarily change your signature too. :poke:
I'm sure someone had a rant about it a while back and you don't want to give out ammunition. :wink:
Click to expand...

Noted, and updated :rofl:
 
Pooltee said:
enuff_zed said:
Pooltee said:
Interesting reading. The video in the second link you posted is exactly how my car sounds on cold start ( bloody awful), so it looks like I will be having the turbo off soon and see if the modified part sorts the issue.

Always something isn’t there! :rofl:
Click to expand...

You may want to temporarily change your signature too. :poke:
I'm sure someone had a rant about it a while back and you don't want to give out ammunition. :wink:
Click to expand...

Noted, and updated :rofl:
Click to expand...
:D :thumbsup:
 
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