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The Full Story On Adjusters & Cams

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Old 09-03-2015, 05:56 PM
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The Full Story On Adjusters & Cams

I originally posted this in the C63 part of the forum, but I know most of the tech guys are here. Since it applies to E63s also, I thought I would put it in this section as well.

I think we should do the best we can to clear this issue up.

I am a Benz tech and have done cams, lifters, and adjusters on the 6.2. I have seen the cam/lifter failure on engines that should be okay per their engine vin number, but they are suffered the failure. When your getting the constant valve train noise, remove the valve cover, and take a look. It is a pretty easy one to figure out.

Cam adjusters on the other hand have me wondering what is "normal" and what would be considered problematic. I know these cars when new did not make the chatter on start. This is for sure. I have done all four adjusters on an E63 with 100k on it, and I would get 20 degrees of crank rotation before the intake cams would move. New adjusters and the engine stayed in time. Also this engine would pass the adjuster test using an SDS before the adjusters were replaced.

Has anyone had catastrophic engine failure due to a cam adjuster on a 6.2? My car has 108k on it and will occasionally make adjuster noise on start. It will never do it for more then a second. It seems people are having adjusters replaced, and then a few thousand miles later are having noise again.

I have read the L.I. documents, but would like to get some feedback from MB techs or people who have first hand experience. On a side note, I'm also curious if the adjusters not fully advancing timing is the reason some 63s make much more or less power then an identically modified car.

Lets hear what you guys think.
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Old 09-03-2015, 08:47 PM
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I have never taken the 63 adjusters apart but I would imagine they use a locking pin like the 272/273 adjusters to prevent them from making noise on start up. The pin pushes out when oil pressure builds up. Only takes a few seconds at most. I have had the pins in the 272/273 stick and taken them apart and cleaned them and had them work just fine again.
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Old 09-03-2015, 09:21 PM
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I see you are in Seattle?
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Old 09-03-2015, 10:32 PM
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Eastside actually.
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Old 11-19-2015, 03:36 AM
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Hey guys and galls, is anyone able to dig out or ask their service advisors to dig out their old camshaft adjusters for layzie12g to have a look at?

Anyone from one of the part stores willing to front for a new one to compare against? ECS Tuning?

We really should bottom this out.

If there is a mod to be made we will all benefit.
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Old 11-19-2015, 07:22 AM
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Not sure if I myself have anything valuable to add to this thread, but I'll talk to my friend who is the AMG tech at MB Portland and see if he has any input. Definitely an interesting topic and something I would like to see fully understood and documented.

My own M156 cam/lifter/adjuster experience for what it's worth: had lifters and cams replaced in my 2008 at 43k because of intermittent ticking from the top end when engine was hot. Car now has 46k, hasn't made that same ticking noise since, but after the car has been sitting for a week or so it has what I think is adjustor chatter coming from only the drivers side bank until the oil reaches operating temp.

Last edited by RZT5; 11-19-2015 at 08:35 AM.
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Old 11-19-2015, 12:16 PM
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This thread has a TON of information on the 204 C63 section of the forum.
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Old 11-19-2015, 03:23 PM
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my E63 has made lifter/adjuster noise upon startup once. it was very loud and got me very worried. went away after 5 minutes warm up and 2 minutes of driving. haven't heard it since.
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Old 07-11-2017, 11:50 PM
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Hello Joe,

Just bought a C63 AMG Estate in Taiwan.

Would you please run my VIN number:

WDD2042771F501417


Thank you in advance.

Matt
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Old 09-09-2017, 06:06 PM
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please help, looking to buy this WDDGJ7HB1DG040939
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Old 09-16-2017, 11:51 PM
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Yikes! Autocorrect sucks. Recision
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Old 09-20-2017, 12:11 PM
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Edited. Wrong post
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Old 11-19-2017, 02:34 PM
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Oops.

Last edited by BenzBtDntBrake; 11-19-2017 at 04:33 PM.
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Old 11-19-2017, 03:37 PM
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Originally Posted by BenzBtDntBrake View Post
Hello, do you mind checking this one for me?

WDDGF7HB6EA955372

Thanks in advanced!
-Rich
There's no one in this thread running VINs. Why are you even asking here?
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Old 11-19-2017, 04:33 PM
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Originally Posted by Strigoi View Post
There's no one in this thread running VINs. Why are you even asking here?
Lol oops looks like the thread switched when I was scrolling on mobile. My bad honest accident
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Old 11-20-2017, 07:11 PM
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Originally Posted by BenzBtDntBrake View Post
Lol oops looks like the thread switched when I was scrolling on mobile. My bad honest accident
I thought I was crazy the first time I went from M156 Cams to windshield wiper threads.
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Old 11-20-2017, 07:16 PM
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I was watching the M156 Cam youtube videos, the middle eastern guy was pointing out the pin inside the adjuster gets mushroomed and to take out and throw it in upside down. It uses a spring to keep it in. All of his video are pretty good, he seems to know his M156 very well, and he also mentions the intake side loosing the chrome plating is because of the wrong oil. The exhaust side is sitting in an oil bath and doesn't need to oil injection like the intake side. He did mention the higher temps in the middle east kept him from using the lower weight oils, he used 10-40 I think.

Ill see if I can link to the first of his videos. I think he has 3, maybe 4 including one where he shows the pin inside the adjusters.
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Old 11-20-2017, 07:22 PM
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he's italian...and he's the M156 god.
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Old 11-20-2017, 07:43 PM
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Originally Posted by hachiroku View Post
he's italian...and he's the M156 god.
His Video said he was in UAE so I assumed he was from there but I forgot they don't really do anything themselves, it's imported folks who do the work. Kuwait has the French do all the work on the planes inside the military hanger I visited.
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