Exhaust Rattle

Find out more about the BMW 1 Series E81, E82, E87, E88.
Manufactured from 2004 to 2011

Moderators: Rich196, babybmwadmin, marco_polo, Producethis, Lambster

Post Reply
kettle2006
Junior Member
Junior Member
Posts: 50
Joined: Sun Mar 26, 2017 9:32 pm
Location: Harwich Essex

Exhaust Rattle

Post by kettle2006 » Thu May 18, 2017 3:34 pm

I have noticed recently that there is a rattle coming from the front of my exhaust, it is only noticeable when idling next to a solid object - parked car, wall etc and goes away at about 1500rpm.... Can hear it when driving alongside parked cars at low rpm too.

I don't think its waste-gate rattle, as it does not happen on declaration when I rev to 3000k and let the revs drop at all, unless this is how it starts?

I plan on getting the car jacked up this weekend to take a look, does anyone know if there are any usual suspects for this sort of noise to look out for - loose heatshield, exhaust hanger etc?
Current - E82 135i '08 Le Mans Blue - Clubsport gearknob, CDV delete

Previous - E46 325ti Sport, Leon Cupra 1.8T

Ktmpedro220
Junior Member
Junior Member
Posts: 27
Joined: Wed Apr 12, 2017 1:25 am

Re: Exhaust Rattle

Post by Ktmpedro220 » Thu May 18, 2017 3:51 pm

I'm sure there was a post not that long ago, similar issue. Sorry it's no help but I can't remember what it came under.

kettle2006
Junior Member
Junior Member
Posts: 50
Joined: Sun Mar 26, 2017 9:32 pm
Location: Harwich Essex

Re: Exhaust Rattle

Post by kettle2006 » Thu May 18, 2017 4:19 pm

I've done a few searches, most of them bring up wastegate rattle or rear exhaust flap rattle, and I don't think its either of those......
Current - E82 135i '08 Le Mans Blue - Clubsport gearknob, CDV delete

Previous - E46 325ti Sport, Leon Cupra 1.8T

kettle2006
Junior Member
Junior Member
Posts: 50
Joined: Sun Mar 26, 2017 9:32 pm
Location: Harwich Essex

Re: Exhaust Rattle

Post by kettle2006 » Thu May 18, 2017 7:40 pm

Bah, think it might be the wastegates, noise disappears with the vaccum lines unplugged :(

it's not terrible, nothing like some of the ones I have seen on YouTube etc

without being parked next to something I can only hear it when really listening out for it, and only for the very last bit of the rpm drop
Current - E82 135i '08 Le Mans Blue - Clubsport gearknob, CDV delete

Previous - E46 325ti Sport, Leon Cupra 1.8T

kettle2006
Junior Member
Junior Member
Posts: 50
Joined: Sun Mar 26, 2017 9:32 pm
Location: Harwich Essex

Re: Exhaust Rattle

Post by kettle2006 » Fri May 19, 2017 8:18 pm

Does anyone know how bad the rattle needs to be before BMW replace the turbos on insured warranty?
Current - E82 135i '08 Le Mans Blue - Clubsport gearknob, CDV delete

Previous - E46 325ti Sport, Leon Cupra 1.8T

sixpistons
Knowledgeable Member
Knowledgeable Member
Posts: 135
Joined: Wed Aug 20, 2014 8:39 pm

Re: Exhaust Rattle

Post by sixpistons » Sun May 21, 2017 8:41 pm

Dual mass flywheel is another likely culprit. Try turning the engine off with the clutch out and listen for a louder rattle as it comes to a stop. If you do the same with the clutch in and it doesn't rattle it will be the flywheel. If so I wouldn't worry - very common. Mines been like that since i bought it over 3 years ago.
2007 130i, Birds B1, H&R anti roll bars.

kettle2006
Junior Member
Junior Member
Posts: 50
Joined: Sun Mar 26, 2017 9:32 pm
Location: Harwich Essex

Re: Exhaust Rattle

Post by kettle2006 » Sun May 21, 2017 10:31 pm

Thank you, I will look out for this tomorrow.

I'm pretty sure that it's the start of the wastegate rattle I'm hearing, as when I was under the car this weekend I checked the actuator arm on the rear turbo and it has a fair bit of play in it!
Current - E82 135i '08 Le Mans Blue - Clubsport gearknob, CDV delete

Previous - E46 325ti Sport, Leon Cupra 1.8T

Ktmpedro220
Junior Member
Junior Member
Posts: 27
Joined: Wed Apr 12, 2017 1:25 am

Re: Exhaust Rattle

Post by Ktmpedro220 » Mon May 22, 2017 5:37 am

Watching this as I've got a similar noise.

kettle2006
Junior Member
Junior Member
Posts: 50
Joined: Sun Mar 26, 2017 9:32 pm
Location: Harwich Essex

Re: Exhaust Rattle

Post by kettle2006 » Tue May 23, 2017 3:46 pm

Ktmpedro220 wrote:
Mon May 22, 2017 5:37 am
Watching this as I've got a similar noise.
There won't be much in the way of an update for a while, as I am going to wait until it gets worse and then get it booked in with BMW as I have a named component warranty with them, I bought this due to concerns about the potential for HPFP and wastegate rattle issues, after shelling out a grand on injectors my emergency fund is rather diminished.

Incidentally, does anyone know if MHD would effect a warranty claim? Was going to do this soon, and would flash back to stock map before taking in, but I guess its taking a bit of a gamble?
Current - E82 135i '08 Le Mans Blue - Clubsport gearknob, CDV delete

Previous - E46 325ti Sport, Leon Cupra 1.8T

Post Reply

Return to “E81, E82, E87, E88 (2004-2011)”

Who is online

Users browsing this forum: myles, Webarno and 4 guests