C43 Turbo Leak

Apr 14, 2019 | 10:22 PM

matt pun

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C43 AMG

C43 Turbo Leak

Hi guys. I read a lot of threads from here or fb reporting the issues on turbo leak. This is apparently a common problem. The first sign of this happening is losing horse power, feeling the car being less powerful than used to be. The second phenomenon is the boost reading in turbo gauge. No full boost appears (usually 1/3) and boost is not holding. I notice there are only intermittent readings in my turbo gauge even I floored it. So, is there any turbo leak, before I tell the dealer to fix it?

Apr 14, 2019 | 10:25 PM

rustybear3

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From: Greater Cleveland area

2019 Dune Silver Metallic E-450 Mercedes Cabriolet NEW Mercedes 2020 GLC300 graphite gray SUV

Could also be a bent turbo fin as well.

Apr 15, 2019 | 08:56 AM

NYCSoiL

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From: Brooklyn, NY

2018 GT R; G82; M340

Just take it to the dealer. Mine had rust on the exhaust flaps connector and this was the reason for the reduced power

Apr 15, 2019 | 09:49 AM

munis

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From: Toronto, ON

2021 Mercedes C63s AMG Coupe

There is a thread on boost leak. It happens from the top of the intercooler. The pipe is usually loose. If you search for it you will find it.

Apr 16, 2019 | 12:53 PM

HTXgearhead

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From: Houston

2018 C43 sedan

Quote:

Originally Posted by munis

There is a thread on boost leak. It happens from the top of the intercooler. The pipe is usually loose. If you search for it you will find it.

What Munis said is probably the issue.

I had the intercooler to manifold hose fail 3 times before the dealer ended up replacing it for me. Check that connection first.

Apr 17, 2019 | 03:37 AM

waisoserious

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From: Taiwan

GLC43, X P100D, S P100D, CT200H

Quote:

Originally Posted by rustybear3

Could also be a bent turbo fin as well.

I think a bent impeller/rotor fin would cause massive vibrations. You could probably hear it.

Apr 17, 2019 | 04:50 AM

matt pun

Thread Starter

Junior Member

Joined: Nov 2017

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C43 AMG

Quote:

Originally Posted by waisoserious

I think a bent impeller/rotor fin would cause massive vibrations. You could probably hear it.

Luckily I don't sense any abnormal vibration in the engine. Just notice the boost is not holding even in full throttle.

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Mar 20, 2020 | 06:43 AM

Marcus Duffner

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Joined: Feb 2019

Posts: 7

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From: Dubai

ML55 AMG, CL65 AMG, G63 AMG

Quote:

Originally Posted by HTXgearhead

What Munis said is probably the issue.

I had the intercooler to manifold hose fail 3 times before the dealer ended up replacing it for me. Check that connection first.

Same on my M275 TT. Heard some hissing when RPM was reaching 2500 and above. Looked around for some leaks but couldn't find any. Ordered the T-bolt clamps and while installing those Y connectors from IC to plenum separated completely. Changed all, Y -pice plus all three clamps plus the 4 T-bolt clamps for the pipe connectors. Will do a test run with SD soon to see the pressure readings.

Jun 29, 2020 | 02:27 PM

#10

saadzafar

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Joined: Jun 2020

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C43 AMG

It happened to me too! Idk what to do besides take it to the dealer for the look, I also noticed the usual "whistle" you get from the turbos when you accelerate doesn't happen to my car anymore.. this really sucks

Jun 30, 2020 | 04:47 PM

#11

AhEmGee

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Joined: Oct 2017

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From: UK

2004 E55 K Wagon &. '96 SL500

Quote:

Originally Posted by waisoserious

I think a bent impeller/rotor fin would cause massive vibrations. You could probably hear it.

you would not feel a vibration from something as small and light as a bent turbine or compressor wheel. They weigh a few hundred grams. You would probably hear it though.