c63 intake manifold issue
Thread Starter
Member
Joined: Aug 2015
Posts: 195
Likes: 7
From: Houston
C63 507
c63 intake manifold issue
Hey guys, I'm sure there's a thread on this somewhere, I remember seeing one long ago, but I didn't find it when running a search, apologies in advance -- operator error.
I have a 2014 c63 507, engine light came on, took it to the shop I regularly take it to, they say the code is for the intake manifold.
But they also say the only way they can tell if it is actually an intake man issue is to remove it from the car, and then I'll probably need a new one, and they said that's like $5K (!)
I remember seeing suggestions a long time ago that it's probably gaskets, not a cracked manifold, and that if replacement is needed you can get one from Weistec or similar -- but I can't find that thread now....
Anyway, any help appreciated -- I don't want to have to take the car to the rip off dealer, but I do need to know how to get the problem diagnosed (I don't work on the car myself, don't have that knowledge), and then if I do need a new intake manifold, are there places like Weistec that usually have them, for a 2014?
Thanks much --
I have a 2014 c63 507, engine light came on, took it to the shop I regularly take it to, they say the code is for the intake manifold.
But they also say the only way they can tell if it is actually an intake man issue is to remove it from the car, and then I'll probably need a new one, and they said that's like $5K (!)
I remember seeing suggestions a long time ago that it's probably gaskets, not a cracked manifold, and that if replacement is needed you can get one from Weistec or similar -- but I can't find that thread now....
Anyway, any help appreciated -- I don't want to have to take the car to the rip off dealer, but I do need to know how to get the problem diagnosed (I don't work on the car myself, don't have that knowledge), and then if I do need a new intake manifold, are there places like Weistec that usually have them, for a 2014?
Thanks much --
Super Member
Joined: Dec 2009
Posts: 748
Likes: 93
From: Dhahran, KSA
2020 E 300 Coupe and 2019 GLS 400
- It would be helpful if they gave you the actual codes, or even better buy a cheap scanner (iCarsoft OR Foxwell NT530) and read the codes your self.
- M156 intake manifold issues can be caused by a faulty PCV, gaskets, loose bolts, bottom plate corrosion, TB plate corrosion, and many other vacuum leaks.
- After knowing the codes, I suggest they do a smoke test to reveal the leaks, instead of guessing and throwing $5k + down the drain.
- The intake manifold in our engines does have its issues but I still believe it is still very solid. I took the 15yrs-old manifold off my car and its still spotless with no corrosion or leaks whatsoever.
Good luck and get a second opinion 👍🏻
- M156 intake manifold issues can be caused by a faulty PCV, gaskets, loose bolts, bottom plate corrosion, TB plate corrosion, and many other vacuum leaks.
- After knowing the codes, I suggest they do a smoke test to reveal the leaks, instead of guessing and throwing $5k + down the drain.
- The intake manifold in our engines does have its issues but I still believe it is still very solid. I took the 15yrs-old manifold off my car and its still spotless with no corrosion or leaks whatsoever.
Good luck and get a second opinion 👍🏻
Super Member
Joined: Jun 2012
Posts: 919
Likes: 116
2009 c63
I had an intake manifold replaced under warranty early (in 2011 on a 2009) on so I didn't care. In the last several years of ownership, I've had the code again, simply cleared it and it never came back.
Regardless, you need to have a scanner to use on all your cars, often a simple code read and a google search will save you tons of money over the long run with all your cars.
Regardless, you need to have a scanner to use on all your cars, often a simple code read and a google search will save you tons of money over the long run with all your cars.
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Joined: Sep 2014
Posts: 3,647
Likes: 818
From: Worldwide
2007 Mercedes E63 AMG
as mileage goes up on these engines, you're most likely to see air leaks in area's which are not intake manifold gaskets. the gaskets will leak right away or seal right away, they don't get worse unless your fastener has lost tension.
throttle body mounting plates leak over time. other area's that can leak are vacuum lines, brake booster lines, or PCV.
if your PCV is 50k or more miles, i would replace this before doing anything with the actual intake manifold. if all else fails you'll need to complete a smoke test to determine a leak.
throttle body mounting plates leak over time. other area's that can leak are vacuum lines, brake booster lines, or PCV.
if your PCV is 50k or more miles, i would replace this before doing anything with the actual intake manifold. if all else fails you'll need to complete a smoke test to determine a leak.
Thread Starter
Member
Joined: Aug 2015
Posts: 195
Likes: 7
From: Houston
C63 507
- It would be helpful if they gave you the actual codes, or even better buy a cheap scanner (iCarsoft OR Foxwell NT530) and read the codes your self.
- M156 intake manifold issues can be caused by a faulty PCV, gaskets, loose bolts, bottom plate corrosion, TB plate corrosion, and many other vacuum leaks.
- After knowing the codes, I suggest they do a smoke test to reveal the leaks, instead of guessing and throwing $5k + down the drain.
- The intake manifold in our engines does have its issues but I still believe it is still very solid. I took the 15yrs-old manifold off my car and its still spotless with no corrosion or leaks whatsoever.
Good luck and get a second opinion 👍🏻
- M156 intake manifold issues can be caused by a faulty PCV, gaskets, loose bolts, bottom plate corrosion, TB plate corrosion, and many other vacuum leaks.
- After knowing the codes, I suggest they do a smoke test to reveal the leaks, instead of guessing and throwing $5k + down the drain.
- The intake manifold in our engines does have its issues but I still believe it is still very solid. I took the 15yrs-old manifold off my car and its still spotless with no corrosion or leaks whatsoever.
Good luck and get a second opinion 👍🏻
0745: mixture, cyl bank 1 is too lean
2091: mixture, Cyl bank 1 is too lean
0749: mixture, cyl bank 2 is too lean
2095: mixture, cyl bank 2 is too lean
Took it first to BenzbyBlair in Houston, as they said they would need to dissamble the manifold to diagnore it, took it to deal (Merc Benz of Sugar Land). Waiting on their diagnosis.
Any thoughts on these codes?
Member
Joined: Feb 2020
Posts: 165
Likes: 53
2014 C63 507 Coupe
It seems to me an intake manifold problem would be more likely to show up on a single cylinder bank. I'm going with hachiroku and solo wing on this. The dreaded PCV, vacuum / booster lines, smoke test. Let us know what you find. I have the same year 507.
