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C63s Ticking Noise on Idle

Old May 16, 2021 | 05:19 AM
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AWC63's Avatar
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2018 C63S
C63s Ticking Noise on Idle

Have noticed this weird ticking noise on idle from the passenger side of engine bay. Seems to be coming from these two parts, what are they? and would they cause this noise?

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Last edited by AWC63; May 16, 2021 at 05:22 AM.
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Old Jun 27, 2021 | 02:30 AM
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DeviantRebel442's Avatar
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208 C63s AMG
Originally Posted by AWC63
Have noticed this weird ticking noise on idle from the passenger side of engine bay. Seems to be coming from these two parts, what are they? and would they cause this noise?

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Bump on this - part of the fuel system, not quite sure what though. Mine are quite loud as well.
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Old Jun 27, 2021 | 08:27 AM
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W205 C63
Interesting, I have a ticking sound, but it comes from behind the front left fender.

I was planning on taking it in next week.
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Old Jun 27, 2021 | 04:48 PM
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Solo wing's Avatar
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2020 E 300 Coupe and 2019 GLS 400
I THINK these are part of the fuel EVAP system. Purge valves to be specific. Ticking is not an issue, it is how the valve operates.
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Old Jun 28, 2021 | 09:14 AM
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c63s 2017
Had/have same issue. Merc service centre said they couldn't figure out issue over 3 seperate service, if they even bothered looking. Took it to local mechanic who said it was coming from those 2 parts. He said something must have broken off inside hence why it rattles more than normal. Mine use to rattle constantly and very loud, even after a good 10min drive.

Got it replaced with a brand new part and it only ticks for few mins after startup and not as loud as it use to be.
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