2014 C250 rattle noise on deceleration
Thread Starter
Newbie
Joined: Aug 2019
Posts: 6
Likes: 0
From: Los Angeles
C250
2014 C250 rattle noise on deceleration
Hi all,
This rattle noise started a few months ago. Took it to my mechanic and he doesn't know what it is. It only happens when I let off the gas and before coming to a stop. More in sport mode than eco mode.
This rattle noise started a few months ago. Took it to my mechanic and he doesn't know what it is. It only happens when I let off the gas and before coming to a stop. More in sport mode than eco mode.
- It sounds like metal on metal vibrating.
- Camshaft adjusters were replaced recently.
- Timing chain is fine
- RADO downpipe is installed/No primary cat
- Turbo was replaced a little over a year ago.
- Can't pinpoint which side the sound is coming from.
- No rattle noise on startup, idle or when I put it in neutral.
Starting this thread to see if anyone else has had this issue. I've checked a lot of places and haven't had any luck with finding someone with a similar issue with the M271 engine. Any help would be appreciated.
Last edited by Wanna_be_63; Sep 12, 2021 at 04:44 PM.
MBWorld Fanatic!
Joined: Sep 2013
Posts: 2,349
Likes: 693
2021 GLB250 FWD, 2023 GLA250 FWD, 2013 C250, 2015 GLK350, 2005 ML350SE, 2003 E320
Hi all,
This rattle noise started a few months ago. Took it to my mechanic and he doesn't know what it is. It only happens when I let off the gas and before coming to a stop. More in sport mode than eco mode.
This rattle noise started a few months ago. Took it to my mechanic and he doesn't know what it is. It only happens when I let off the gas and before coming to a stop. More in sport mode than eco mode.
- It sounds like metal on metal vibrating.
- Camshaft adjusters were replaced recently.
- Timing chain is fine
- RADO downpipe is installed/No primary cat
- Turbo was replaced a little over a year ago.
- Can't pinpoint which side the sound is coming from.
- No rattle noise on startup, idle or when I put it in neutral.
Starting this thread to see if anyone else has had this issue. I've checked a lot of places and haven't had any luck with finding someone with a similar issue with the M271 engine. Any help would be appreciated.
Exhaust systems are often the source for these kinds of noises.
Can you get the car off the ground? With insulated gloves the exhaust pipe can be shaken hard by hand when hot. This may show where the interference is. Banging on it the with a rubber mallet may also be useful.
Thread Starter
Newbie
Joined: Aug 2019
Posts: 6
Likes: 0
From: Los Angeles
C250
Point number 1 - metal on metal vibrating sounds like a clearance problem.
Exhaust systems are often the source for these kinds of noises.
Can you get the car off the ground? With insulated gloves the exhaust pipe can be shaken hard by hand when hot. This may show where the interference is. Banging on it the with a rubber mallet may also be useful.
Exhaust systems are often the source for these kinds of noises.
Can you get the car off the ground? With insulated gloves the exhaust pipe can be shaken hard by hand when hot. This may show where the interference is. Banging on it the with a rubber mallet may also be useful.
MBWorld Fanatic!
Joined: Sep 2013
Posts: 2,349
Likes: 693
2021 GLB250 FWD, 2023 GLA250 FWD, 2013 C250, 2015 GLK350, 2005 ML350SE, 2003 E320
I have had something that sounds similar every time I have done anything with the exhaust on my MBs. Look for interference with heat shields and things like that. Hopefully it's the exhaust because that is an easy and no cost fix. Keep us informed.
Newbie
Joined: May 2022
Posts: 1
Likes: 0
2014 Mercedes c250
Hi all,
This rattle noise started a few months ago. Took it to my mechanic and he doesn't know what it is. It only happens when I let off the gas and before coming to a stop. More in sport mode than eco mode.
This rattle noise started a few months ago. Took it to my mechanic and he doesn't know what it is. It only happens when I let off the gas and before coming to a stop. More in sport mode than eco mode.
- It sounds like metal on metal vibrating.
- Camshaft adjusters were replaced recently.
- Timing chain is fine
- RADO downpipe is installed/No primary cat
- Turbo was replaced a little over a year ago.
- Can't pinpoint which side the sound is coming from.
- No rattle noise on startup, idle or when I put it in neutral.
Starting this thread to see if anyone else has had this issue. I've checked a lot of places and haven't had any luck with finding someone with a similar issue with the M271 engine. Any help would be appreciated.
Thread Starter
Newbie
Joined: Aug 2019
Posts: 6
Likes: 0
From: Los Angeles
C250
UPDATE 8/05/2022
Hi all,
This rattle noise started a few months ago. Took it to my mechanic and he doesn't know what it is. It only happens when I let off the gas and before coming to a stop. More in sport mode than eco mode.
This rattle noise started a few months ago. Took it to my mechanic and he doesn't know what it is. It only happens when I let off the gas and before coming to a stop. More in sport mode than eco mode.
- It sounds like metal on metal vibrating.
- Camshaft adjusters were replaced recently.
- Timing chain is fine
- RADO downpipe is installed/No primary cat
- Turbo was replaced a little over a year ago.
- Can't pinpoint which side the sound is coming from.
- No rattle noise on startup, idle or when I put it in neutral.
Starting this thread to see if anyone else has had this issue. I've checked a lot of places and haven't had any luck with finding someone with a similar issue with the M271 engine. Any help would be appreciated.
O2 seonsors on cat: replaced
Air sensors are being replaced
Valve job
Not sure if this will do anything, but I'm desperate to get it fixed.
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Thread Starter
Newbie
Joined: Aug 2019
Posts: 6
Likes: 0
From: Los Angeles
C250
C250 M271 Misfire/squeaking/rough cold start
Hi all,
This rattle noise started back in June of 2021. Now it also has a squeaking noise on startup and the car is bogging while driving normal at low rpm's. The rattle only happens when I let off the gas and before coming to a stop. More in sport mode than eco mode. Very rough cold start, car idles very loud for 10 seconds while misfiring and then idles normally right after and the squeaking starts until the car is fully warm and then it goes away.
Attched are 2 videos directly from my phone. One is the grinding sound and the other one is the squeaking. Any information or idea on this will be greatly appreciated.
This rattle noise started back in June of 2021. Now it also has a squeaking noise on startup and the car is bogging while driving normal at low rpm's. The rattle only happens when I let off the gas and before coming to a stop. More in sport mode than eco mode. Very rough cold start, car idles very loud for 10 seconds while misfiring and then idles normally right after and the squeaking starts until the car is fully warm and then it goes away.
- It sounds like metal on metal grinding.
- Camshaft adjusters/timing chain were replaced 6/04/21 at a dealership
- Timing chain is fine according to my mechanic
- O2 sensors and air sensors are being replaced.
- Crankcase breather was replaced
Attched are 2 videos directly from my phone. One is the grinding sound and the other one is the squeaking. Any information or idea on this will be greatly appreciated.
Last edited by Wanna_be_63; Aug 5, 2022 at 04:08 PM.
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Thread Starter
Newbie
Joined: Aug 2019
Posts: 6
Likes: 0
From: Los Angeles
C250
Hi all,
This rattle noise started back in June of 2021. Now it also has a squeaking noise on startup and the car is bogging while driving normal at low rpm's. The rattle only happens when I let off the gas and before coming to a stop. More in sport mode than eco mode. Very rough cold start, car idles very loud for 10 seconds while misfiring and then idles normally right after and the squeaking starts until the car is fully warm and then it goes away.
Attched are 2 videos directly from my phone. One is the grinding sound and the other one is the squeaking. Any information or idea on this will be greatly appreciated.
This rattle noise started back in June of 2021. Now it also has a squeaking noise on startup and the car is bogging while driving normal at low rpm's. The rattle only happens when I let off the gas and before coming to a stop. More in sport mode than eco mode. Very rough cold start, car idles very loud for 10 seconds while misfiring and then idles normally right after and the squeaking starts until the car is fully warm and then it goes away.
- It sounds like metal on metal grinding.
- Camshaft adjusters/timing chain were replaced 6/04/21 at a dealership
- Timing chain is fine according to my mechanic
- O2 sensors and air sensors are being replaced.
- Crankcase breather was replaced
Attched are 2 videos directly from my phone. One is the grinding sound and the other one is the squeaking. Any information or idea on this will be greatly appreciated.
UPDATE: Stretched timing chain was the issue. 1 piston went bad and had to be replaced, intake manifold flap was not working(replaced). Squeaking was from the alternator. Car's fully fixed and running normally now
Thread Starter
Newbie
Joined: Aug 2019
Posts: 6
Likes: 0
From: Los Angeles
C250
Hi all,
This rattle noise started a few months ago. Took it to my mechanic and he doesn't know what it is. It only happens when I let off the gas and before coming to a stop. More in sport mode than eco mode.
This rattle noise started a few months ago. Took it to my mechanic and he doesn't know what it is. It only happens when I let off the gas and before coming to a stop. More in sport mode than eco mode.
- It sounds like metal on metal vibrating.
- Camshaft adjusters were replaced recently.
- Timing chain is fine
- RADO downpipe is installed/No primary cat
- Turbo was replaced a little over a year ago.
- Can't pinpoint which side the sound is coming from.
- No rattle noise on startup, idle or when I put it in neutral.
Starting this thread to see if anyone else has had this issue. I've checked a lot of places and haven't had any luck with finding someone with a similar issue with the M271 engine. Any help would be appreciated.
Member
Joined: Jan 2022
Posts: 104
Likes: 6
W204 2013 C250 Coupe
Hello,
We may have similar problems, would you be kind enough to check these two YouTube videos to see whether the noise I'm having is similar to what you were experiencing? I also have rattle on deceleration. - I haven't taken it to the mechanic yet, will do so soon
Thank you
my original post here in case you're interested
https://mbworld.org/forums/c-class-w...w204-c250.html
We may have similar problems, would you be kind enough to check these two YouTube videos to see whether the noise I'm having is similar to what you were experiencing? I also have rattle on deceleration. - I haven't taken it to the mechanic yet, will do so soon
Thank you
my original post here in case you're interested
https://mbworld.org/forums/c-class-w...w204-c250.html
Newbie
Joined: Oct 2023
Posts: 2
Likes: 0
2013 C250
Hello,
We may have similar problems, would you be kind enough to check these two YouTube videos to see whether the noise I'm having is similar to what you were experiencing? I also have rattle on deceleration. - I haven't taken it to the mechanic yet, will do so soon
Thank you
https://www.youtube.com/watch?v=OptN...e=emb_imp_woyt
https://www.youtube.com/watch?v=yIks...e=emb_imp_woyt
my original post here in case you're interested
https://mbworld.org/forums/c-class-w...w204-c250.html
We may have similar problems, would you be kind enough to check these two YouTube videos to see whether the noise I'm having is similar to what you were experiencing? I also have rattle on deceleration. - I haven't taken it to the mechanic yet, will do so soon
Thank you
https://www.youtube.com/watch?v=OptN...e=emb_imp_woyt
https://www.youtube.com/watch?v=yIks...e=emb_imp_woyt
my original post here in case you're interested
https://mbworld.org/forums/c-class-w...w204-c250.html
Newbie
Joined: Sep 2024
Posts: 3
Likes: 1
mines starting to do that same thing as all you guys. I’ve replaced cam adjusters, tensioner 2 different times with new ones. Same thing is happening. I have the timing chain by fibi bilstein I’m dredding to put in but at this point I’m 98% sure that’s it. Sad sad I wanna cry my eye ***** out
Newbie
Joined: Oct 2024
Posts: 2
Likes: 0
mines starting to do that same thing as all you guys. I’ve replaced cam adjusters, tensioner 2 different times with new ones. Same thing is happening. I have the timing chain by fibi bilstein I’m dredding to put in but at this point I’m 98% sure that’s it. Sad sad I wanna cry my eye ***** out
Newbie
Joined: Oct 2024
Posts: 2
Likes: 0
Hello,
We may have similar problems, would you be kind enough to check these two YouTube videos to see whether the noise I'm having is similar to what you were experiencing? I also have rattle on deceleration. - I haven't taken it to the mechanic yet, will do so soon
Thank you
https://www.youtube.com/watch?v=OptN...e=emb_imp_woyt
https://www.youtube.com/watch?v=yIks...e=emb_imp_woyt
my original post here in case you're interested
https://mbworld.org/forums/c-class-w...w204-c250.html
We may have similar problems, would you be kind enough to check these two YouTube videos to see whether the noise I'm having is similar to what you were experiencing? I also have rattle on deceleration. - I haven't taken it to the mechanic yet, will do so soon
Thank you
https://www.youtube.com/watch?v=OptN...e=emb_imp_woyt
https://www.youtube.com/watch?v=yIks...e=emb_imp_woyt
my original post here in case you're interested
https://mbworld.org/forums/c-class-w...w204-c250.html
Newbie
Joined: Oct 2024
Posts: 1
Likes: 0
2012 C250 Coupe
Same Rattle while decelerating C250 cuoğe
Is there anybody else that solve this problem. My C250 coupe 1.8 CGI engine makes the same sound. No CEL by the way. :/ Is it exactly related to cam adjusters and timing chain?
Newbie
Joined: Apr 2020
Posts: 3
Likes: 0
W212
I want to share my experience and solution with the ratting noise problem. Hopefuly some of you are having the same problem. I had about the same problem as well, the engine produced a rattling noise like metal ***** hitting within the cylinders, or valve knocking or a loosen drive-chain slapping on the engine cover etc. It will occur for a short 2 to 3 seconds when the car come into its final deceleration. The rattling will occur when the engine get warmed up. Point to note is my engine also had a whining noise like there is a bad bearing somewhere.
I replaced many components but it didnt solve the problem until a mechanic told me it was the Balance Shaft that had caused both the rattling and whining. True enough, the ratting and whining noise were resolved after the balance shaft was replaced. Hope this info can be useful to all.
The balance shaft can be costly in the region of around U$3k to U$4k. If it is left unattended, the problem can cause engine failure like piston rod damage or breaking the cam shaft etc. So do pay attention if you have similar problem.
Last edited by ct3833; Nov 24, 2024 at 10:47 PM.
