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Old Sep 28, 2021 | 09:00 PM
  #1  
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Angry 2017 C63 Engine Knock/Tick Sound

Hello,
I have a 2017 C63 with a weird Knock/Tick sound form the motor. It goes away usually, but comes back on cold starts and when the car is still warm and has been sitting. I took it to my mechanic (He's a certified master technician for Mercedes with over 20 years experience). He changed all the pulleys and both of the belts. Sound went away but came back. We are both stumped. He has called the dealer and talked to other mechanics at Mercedes and none of them know what the sound is. Any help would be grateful. Some other posts say it might be timing chain guides, but those posts never followed up with the fix was. Oil was recently changed also. I've attached a video. Car only has 32,000 miles.

Thanks!!!
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File Type: mov
Motor Sound.MOV (2.91 MB, 465 views)
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Old Sep 29, 2021 | 08:44 AM
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Originally Posted by ameli72
Hello,
I have a 2017 C63 with a weird Knock/Tick sound form the motor. It goes away usually, but comes back on cold starts and when the car is still warm and has been sitting. I took it to my mechanic (He's a certified master technician for Mercedes with over 20 years experience). He changed all the pulleys and both of the belts. Sound went away but came back. We are both stumped. He has called the dealer and talked to other mechanics at Mercedes and none of them know what the sound is. Any help would be grateful. Some other posts say it might be timing chain guides, but those posts never followed up with the fix was. Oil was recently changed also. I've attached a video. Car only has 32,000 miles.

Thanks!!!
When it has that CRICKET sound then its Chain Guides + , suprised a 20 year MB tech didnt know that ?? :-(

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Old Sep 29, 2021 | 10:13 AM
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Originally Posted by ameli72
Hello,
I took it to my mechanic (He's a certified master technician for Mercedes with over 20 years experience)
Chain guides. Certified master tech eh? Someone's blowing smoke up your a*s

ps we have a topic on that already https://mbworld.org/forums/c63-c63s-amg/809290-c63s-ticking-noise.html#post8295719

Last edited by Jimmy_c63s; Sep 29, 2021 at 10:19 AM. Reason: Added a link
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Old Sep 29, 2021 | 10:22 AM
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Game over $8000 repair minimum.......

& take it to someone who's not your mechanic cos he has nfi
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Old Sep 29, 2021 | 10:34 AM
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Originally Posted by George_1992
Game over $8000 repair minimum.......

& take it to someone who's not your mechanic cos he has nfi
Yea I havnt seen different price quotes on it, but I know its not a cheap repair.. .damn crickets.. hah...
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Old Sep 29, 2021 | 10:40 AM
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Originally Posted by Jimmy_c63s
Chain guides. Certified master tech eh? Someone's blowing smoke up your a*s

ps we have a topic on that already https://mbworld.org/forums/c63-c63s-...ml#post8295719
yea what he said......
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Old Sep 29, 2021 | 06:30 PM
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Mercedes said the sound was normal, so I'm not surprised that he wasn't able to find the issue instantly, especially from reading the other forums regarding this issue, it seems everyone that has this issue has a tough time diagnosing it. I'm five months outside of warranty, but I'm taking the car back to Mercedes and asking for goodwill assistance with this issue under warranty. Its my 6th Mercedes and I've never had an issue with any of my motors. This is a first.
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Old Sep 30, 2021 | 08:33 AM
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Originally Posted by ameli72
Mercedes said the sound was normal, so I'm not surprised that he wasn't able to find the issue instantly, especially from reading the other forums regarding this issue, it seems everyone that has this issue has a tough time diagnosing it. I'm five months outside of warranty, but I'm taking the car back to Mercedes and asking for goodwill assistance with this issue under warranty. Its my 6th Mercedes and I've never had an issue with any of my motors. This is a first.
The tick is normal (from injectors) but 99.999999999999999% cricket sound is Chain Guides etc..
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Old Sep 30, 2021 | 12:26 PM
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So I'm assuming the proper thing to do is to have all the guides and the timing chain replaced since its going to be opened up. Is there any other parts you would suggest to have replaced while they have it open?
Thanks!!
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Old Sep 30, 2021 | 12:46 PM
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Originally Posted by ameli72
So I'm assuming the proper thing to do is to have all the guides and the timing chain replaced since its going to be opened up. Is there any other parts you would suggest to have replaced while they have it open?
Thanks!!
Cam adjusters
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Old Sep 30, 2021 | 01:16 PM
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You should have someone rev the engine to see how the sound changes at different RPMs. TI sounds normal. Might want to look into using different oil if its just during cold start temps.
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Old Sep 30, 2021 | 01:21 PM
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Originally Posted by ameli72
any other parts you would suggest to have replaced
mechanic....
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Old Sep 30, 2021 | 01:24 PM
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It's going to Mercedes dealer. There are plenty of mechanics there.
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Old Sep 30, 2021 | 01:51 PM
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Originally Posted by George_1992
mechanic....
Hahaaha 🤣
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Old Sep 30, 2021 | 01:54 PM
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Old Sep 30, 2021 | 01:59 PM
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Originally Posted by Jimmy_c63s
air filters
AHAHAHAHA
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Old Sep 30, 2021 | 05:21 PM
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And the saga continues........ Mercedes said they "could not replicate customer's concern." And when I picked it up, the sound was gone. Thoughts?

And yes, my air filters are clean, and my muffler bearings have been oiled too. ; )
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Old Oct 4, 2021 | 01:58 PM
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Exactly what I did. I changed the oil to Liqui Moly. After the oil change, the first time I fired it up the sound went away within 2-3 minutes. I still notice the sound on cold starts but it goes away after the motor is warmed up and the oil temp hits 170. It's still there, but it baffles me that it goes away.
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Old Oct 4, 2021 | 10:46 PM
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Originally Posted by ameli72
Exactly what I did. I changed the oil to Liqui Moly. After the oil change, the first time I fired it up the sound went away within 2-3 minutes. I still notice the sound on cold starts but it goes away after the motor is warmed up and the oil temp hits 170. It's still there, but it baffles me that it goes away.
Unfortunately if the sound is there, it's not going to be fixed by using different oil. It may dampen the cricket noise but it'll still need to be done sooner or later.

Which sucks because now i'll need to allocate 10-12k aud somewhere in the near future in case mine starts doing the same thing........... which I know it will
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Old Oct 4, 2021 | 10:50 PM
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Originally Posted by George_1992
Unfortunately if the sound is there, it's not going to be fixed by using different oil. It may dampen the cricket noise but it'll still need to be done sooner or later.

Which sucks because now i'll need to allocate 10-12k aud somewhere in the near future in case mine starts doing the same thing........... which I know it will
Yeah that's how I'm starting to feel too. Seems like this issue might be an inevitable thing?

And how long will the new timing chain guides last until they play up again after they're fixed?? Hopefully there will be more developments on this fix in future etc.

Us and our 100k lemons eh? 🍋
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Old Oct 4, 2021 | 10:54 PM
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Originally Posted by Jimmy_c63s
Yeah that's how I'm starting to feel too. Seems like this issue might be an inevitable thing?

And how long will the new timing chain guides last until they play up again after they're fixed?? Hopefully there will be more developments on this fix in future etc.

Us and our 100k lemons eh? 🍋
lol which is why anything new from amg fails to get me excited now......... knowing what these cars are about let's just be THANKFUL our cars aren't black series gt or this amg one nonsense could u imagine how much angrier you'd be if you invested in those cars and exhaust rattles started and other strange bs 🤣🤣🤣
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Old Oct 4, 2021 | 10:58 PM
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Originally Posted by George_1992
lol which is why anything new from amg fails to get me excited now......... knowing what these cars are about let's just be THANKFUL our cars aren't black series gt or this amg one nonsense could u imagine how much angrier you'd be if you invested in those cars and exhaust rattles started and other strange bs 🤣🤣🤣
True. Fck that 🙄

In b4 AMG GT Black Series exhaust rattle topic starts in the C190 section
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Old Oct 14, 2021 | 12:06 PM
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Originally Posted by ameli72
Exactly what I did. I changed the oil to Liqui Moly. After the oil change, the first time I fired it up the sound went away within 2-3 minutes. I still notice the sound on cold starts but it goes away after the motor is warmed up and the oil temp hits 170. It's still there, but it baffles me that it goes away.
Buddy what's the latest update on the crickets noise? Still there on cold starts? Any fixes or progress?
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Old Oct 15, 2021 | 02:46 PM
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Yes! I took it to another Mercedes dealership, showed them the video, showed them the noise and I just received a call that the car is ready and that the knocking/chirping noise is gone. It was due to bad purge valves. So everyone was wrong, and it only cost $400. What a relief. When they called me yesterday I was expecting them to send me a $10k - $12k quote to fix the problem based off of all the "experts" on this thread and other threads, but that wasn't the issue. I got extremely lucky!!
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Old Oct 15, 2021 | 06:49 PM
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Originally Posted by ameli72
Yes! I took it to another Mercedes dealership, showed them the video, showed them the noise and I just received a call that the car is ready and that the knocking/chirping noise is gone. It was due to bad purge valves. So everyone was wrong, and it only cost $400. What a relief. When they called me yesterday I was expecting them to send me a $10k - $12k quote to fix the problem based off of all the "experts" on this thread and other threads, but that wasn't the issue. I got extremely lucky!!
purge valves huh...
mine was caused by secondary guide rails iirc..
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