Fuel Trim Range
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From: USA
CL63 AMG
Def intake manifold leak. Peter is correct. The upper composite portion tends to crack overtime (after so many heat cycles). Bottom is magnesium usually less prone unless corrosion occurs for some other reason)
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2010 C63 AMG, 2015 GL450, 2018 GLS 550, 2021 GLS 450
One more thing to note, my exterior temp is off by 35 degrees at times.
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2012 P31 C63 Coupe Trackrat, 2019 GLE63S Coupe Beast
Coolant and oil temp behavior sound totally normal
Exterior temp is an entirely different sensor, it’s stuck in your drivers side grill. Not relevant.
Exterior temp is an entirely different sensor, it’s stuck in your drivers side grill. Not relevant.
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2010 C63 AMG, 2015 GL450, 2018 GLS 550, 2021 GLS 450
After spark plug replace my my trims are back to normal. But I will still end up replacing the IM +Injectors to be 100% sure. The noise is my Coolant or windshield wiper reservoir (whatever the big oval shaped tank on the passenger side is) rattling against the body of the car. The picture attached is from Bank 1 Bank 2s plugs were very worn. Seems like they were original to the car. I have seen service history for the car. And it’s seen service A and B on time with HBs
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2007 Mercedes E63 AMG
lol thanks for that info...just checked mine...its hovering around 4.8-5.4 and i have an idle misfire here and there caused by it. figured it was a leaky/cracked intake manifold but now i know for sure. 
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2007 Mercedes E63 AMG
i don't think a reading of 4.2 is bad...but for my car...i do have a random misfire at idle and have had it for a while now. i have over time replaced with new plugs, coils, and injectors for other reasons. last item would be an air leak.
what are folks doing who have issues with intake manifolds failing? buying new one? JB Weld?
what are folks doing who have issues with intake manifolds failing? buying new one? JB Weld?
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2010 C63 AMG
Having unmetered/unfiltered air entering the combustion process is bad no matter how little.
If it should be 8.5, then 4.2 is bad.
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2009 c63
can someone share a real specification for this?
This is a few thousand dollar repair if I recall. I have no codes and no real issues. At times it feels “lungy” between 1-2k when under very light throttle... otherwise the can feels perfect.
This is a few thousand dollar repair if I recall. I have no codes and no real issues. At times it feels “lungy” between 1-2k when under very light throttle... otherwise the can feels perfect.
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2012 P31 C63 Coupe Trackrat, 2019 GLE63S Coupe Beast
I don’t have the spec. I have this discussion here to go by.
https://mbworld.org/forums/c63-amg-w...ml#post7425366
Take it for whatever it’s worth.
Here’s what I had:
SAE.MAP inHg = intake manifold absolute pressure = 8.3 to 10 (dead on 8.6)
Maybe it’s not the same reading
https://mbworld.org/forums/c63-amg-w...ml#post7425366
Take it for whatever it’s worth.
Here’s what I had:
SAE.MAP inHg = intake manifold absolute pressure = 8.3 to 10 (dead on 8.6)
Maybe it’s not the same reading
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2009 c63
[QUOTE=BLKROKT;7972323]I don’t have the spec. I have this discussion here to go by.
Well now, Xavier's screen was in psi so I changed my units of measure to match his ...
By your spec:
8.3 Hg = 4.08 psi min
10 Hg = 4.91 psi max
So perhaps that is not it.
Well now, Xavier's screen was in psi so I changed my units of measure to match his ...
By your spec:
8.3 Hg = 4.08 psi min
10 Hg = 4.91 psi max
So perhaps that is not it.
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2007 Mercedes E63 AMG
a standard range for tuning idle for standalones is 19-22 inHg which converts to 9.3-10.8 psi. generally speaking, the same should be said for any engine and computer combo that utilizes an intake manifold. the higher the compression the engine, the higher the vacuum.
8.3-10 psi would equate to 16.9-20.34 inHg
8.3-10 psi would equate to 16.9-20.34 inHg
Last edited by hachiroku; Feb 5, 2020 at 03:32 AM.
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2007 Mercedes E63 AMG
ok so we're all within range. I still feel I have a leak though for to my idle missing
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2009 c63
I was in a company that got bought by P&G, We used M for thousands and MM for Millions (Roman). They used M for Million and k for thousand. Yeah some big mistakes were made.
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2010 C63 AMG
Come to Canada where we half adopted metric ( engineering and socially) but then kept standard for the actual building and use of things. You are constantly converting things
Last edited by deadlyvt; Feb 7, 2020 at 12:09 PM.
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2007 Mercedes E63 AMG
supposedly this is the only item that fails in the intake manifold. from the dealer it isn't available separately, but luckily the aftermarket has caught up.
https://rebuildmastertech.com/merced...it-1561400801/
https://rebuildmastertech.com/merced...it-1561400801/
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Joined: Jun 2012
Posts: 919
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2009 c63
supposedly this is the only item that fails in the intake manifold. from the dealer it isn't available separately, but luckily the aftermarket has caught up.
https://rebuildmastertech.com/merced...it-1561400801/
https://rebuildmastertech.com/merced...it-1561400801/
