Hello everyone

I have a 2013 C63 60k KM and I'm wondering if its prone to all the common M156 issues excluding the head bolts.

I'm going through this car because I'm thinking about selling it and I want the new owner to be happy with it. I love the car but I've owned it since new so I'm getting the itch.

Did MB improve the following
-Intake Manifold Center Mounting Plate: I don't see any repair kits for anything older than a 2012.
-Cam shaft and adjusters: I don't have the problem but one of the technicians at the dealer told me that was an old issue and he hasn't seen that issue on the newer cars. He also said he couldn't see me have the issue because I always changed the oil at 4500km or less.

So far this year I had Eurocharge tune and change the spark plugs, change oil with ceratec, and the dealer serviced the trans, LSD, replaced the left valve cover, L and R valve cover seals and inspect the adjusters, followers, and cams.

Next I'm going to replace the injectors, engine crankcase vent valve and intake manifold gaskets and since the intake manifold is coming off I'm wondering if I should order the intake center plate.

 

No unfortunately
intake manifold is exactly the same
camshafts are the same, you might have the sls lifters but probably not. The adjusters are the same as well. They will wear eventually the metal used is the issue. If you are selling it don’t worry about any of it let the new owner worry about it

 

So does anyone know about the intake plate?

 

The intake plates corrode and leak air over time but mine was fine last I looked at it.
You can get a replacement aluminum one from OEM NEW M156 V8 Engine Intake Manifold Center Mounting Plate Repair Kit | Mercedes-Benz C63 AMG 2008-2012 (rebuildmastertech.com)

 

Yes I see those being sold but none of them say they are for a 2013 and up. I'll call them to see if they fit the newer cars.

 

I can confirm, they do fit 2013. I just had one installed in my car.

 

Slow c63 and others, have you been happy with these repair kits?

 

Very happy with mine. I've driven the car for about 5k miles since install with zero issues so far.

I did have an issues with the first unit, that was in rough shape. Metal shavings and whatnot. I didn't even bother using it, and the company was nice enough to fix their mistake.

 

C63 nut, did you end up getting one of these?

 

I didn't need the repair kit. Mine was perfectly fine, not a spec of corrosion.

All I did was clean it and then soaked it in Alodine to seal it inside and out so I never have to worry about it corroding. I suggest doing the same

I also used Alodine on the intake manifold by spraying inside and out after cleaning so I didn't need to disassemble it.

 

You don't get any special lifters.

Ask me how I know

mboemparts.com is a nice site to get anything OEM that is a good replacement.

I would assume anything besides the headbolts would be a problem in your engine/car as well.

I had one of these back out on me, fortunately I was driving slow and only scuffed the wheel slightly so you could check that?

221-421-00-14.

Motor mounts are something you should check.

Otherwise expect the worst and hope for the best and do a lot of reading/research.

 

Just to add to this, mine seemed to be in excellent order as well. Looked nearly brand new. But I went ahead and replaced it anyways.

I can't report that the plate was the cause of my problem exactly. I replaced the PCV as well, along with drive belt, pulleys, transmission service, motor mounts, transmission mount, new injectors, new plugs... probably forgetting something. One of those things definitely eliminated the issue that I had. Just not sure which one as I did most of it all at once. I also had a small vacuum leak on the IM, back side, which was fixed with a simply O ring.

Someone will be getting a good car if I ever decide to sell. xD

 

Slow C63- What was the problem you were chasing with your car?

I’m new to the C63 W204 world and I’ve noticed a jerk, hesitation when merging/accelerating on the highway.
A search has resulted in about 101 things possibly wrong with it.
No CIL currently on the cluster however the generic P0101 on the cheap scanner did make an appearance briefly and was cleared.
I’ve done some of the simple maintenance (plugs, injectors, cleaned air filters and mass air meter) with no luck so far eliminating this problem.

 

I had slight irregular idle.

Also, the car would sorta “bog” when leaving the line, and coming to a stop was abrupt. Almost felt like being rear ended coming to a stop.

All this affected my 1-2 and 2-1 shift as well. If I were driving in M mode, if I were coming to a stop and getting back on it the car would act up. Almost felt like driving a manual car for this first time.

Car was a complete animal at WOT. Driving the car felt normal once the car got going. I had no CEL or codes. It was just one of those “this can’t be normal”.

 

Were you able to narrow down what you think fixed it?

My plan for my issue is MB dealer for the air bag recall and have them check if any software upgrades required.
If that does nothing which I suspect…the trans is getting serviced next with fresh fluid and filter.
I’m sure it’s way passed due and I’ll get the shop to scan it at that point and get their opinion on a test drive.
Def not ruling out PCV/Intake gasket as that seems very common on these engines.
Really hoping it has nothing to do with the MCT clutches however.

If anyone has had similar problems or any suggestions I would like to hear them.

 

My guess would be the intake manifold gasket, and the O ring where the brake cylinder connects. My idle was fixed 100%.

The transmission still acts up here and there still, harsh down shifts and whatnots. But that’s expected from an MCT car. I dropped off the car at the shop yesterday to do TCU tune hoping that it will help some more.

But overall I’m very happy where my car sits right now. I’m also at 58,000 miles now and have done every possible maintenance in last 5k miles. My thinking was “I won’t have to do most of this stuff again in next 30-50k miles”.

 

Well that’s good the idle is fixed and hopefully the TCU tune improves the MCT.
We have similar mileage as I’m at 110kms.
I’d like to change the ignition coils as part of the general maintenance as I’m not sure if they’ve ever been replaced.
If it was a bad coil I would think it would misfire more often, idle rough and just be more obvious but I could be wrong.

 

Small correction, that is the only thing that I havent done yet, ignition coils. Now that you reminded me I think I may just get it out of the way now since I’m very close to 60k miles.

 

I know the 2014 models have the springs from the SLS which result in MORE wear on the cam lobes. Not sure if that is exclusive to the 2014 or not. The lifters should all be the same.

 

I've ordered new ignition coils for mine.....figured it's worth a shot with my issue (kinda feels like a misfire) and I'm guessing they’re still the originals with 110kms on them.

 

I swapped out the coils for new Delphi coils and my problem still existed.
Also had the dealer do a software upgrade which they said was required and it still had the same issue.

Decided to swap out the current K+N air filters for new Mann paper filters and the problem is GONE!
I think the combination of the charcoal delete and K+N filters threw off the MAFs enough to jerk/hesitate at low speed accelerating.
I also think that when you start increasing engine airflow on these cars (ROW boxes, high flow air filters, headers etc) a tune is mandatory otherwise you’re just asking for problems.

Next on my list is trany service and just enjoy it.