Mercedes SLK World banner

1 - 15 of 15 Posts

·
Registered
Joined
·
5 Posts
Discussion Starter #1
Hello forum members,

I'm obviously new to this amazing forum. I came across a 6-year-old post discussing a problem that I've been suffering from for almost a year! So I decided I should be part of such knowledge base.

I am a Mechatronics Engineer with an MSc. in Artificial Intelligence and control theory, specialized in Autonomous driving. I am currently employed by one of the top notch automotive tier 1 suppliers for sensors and ECUs.

I have always been a bimmer fan as a child, until my father bought a W210 E200. I was in love with the thing! It totally changed my mindset, given its luxury, while still maintaining its amazing durability. For my first car, I got an Opel Astra J, which I kept for 2 years, and sold it right after the auto transmission died. I hated it, and decided to invest in a benz. I found a W203 C200K in mint condition with 90k km on the clock. It had the same m111 engine that was in my father's W210, and which I loved, but with the additional power and agility because of the compressor. I bought the car and have been enjoying it ever since. EXCEPT for this stupid noise that I can't seem to solve.

This has started happening after a head gasket job. I have been studying the design of this engine carefully. A possible cause would be that whoever installed the timing chain back didn't ensure that the intake cam adjuster was at the fully retarded position. This would cause the intake cam to be always more advanced than it should, which would in turn increase overlap, and increase dynamic compression ratio.

Increasing overlap between intake and exhaust valve opening events would cause an increase in fuel consumption, a louder (and better) sounding exhaust, and with high octane fuel can cause an increase in low end torque. Increasing dynamic compression ratio would cause this pinging sound when the engine is under load at low rpm when the cam adjuster is signaled by the ECU to advance intake cam timing. The pinging sound disappears at higher rpm when the cam adjuster is commanded back to the retarded position.

I hope my explanation was clear enough. Let me know if you have any conclusions.

I am glad to be part of this forum. I hope I could provide assistance to anyone with software or electronics issues in their Sterns ;)
 

·
Super Moderator CA 2012 SLK55 AMG w/P30
Joined
·
13,206 Posts
Welcome to SLKWorld.com: The #1 Mercedes-Benz SLK Forum from Canada!

Free Gift!: Post your vin in the Vehicle Datacard Request section to get a free datacard (options on your car).

https://www.slkworld.com/vehicle-data-card/67706-free-how-get-free-datacard.html

Some tips to make your visit here more enjoyable:

If you haven’t, please use the 'search' feature at the top right of the page for your questions as they have probably been asked before. Remember, ‘Search’ is your friend.

If you wish to become PM (Private Message) capable, you need 15 posts. To get those 15 posts quickly, just go to the ‘New members introduce yourself here’ section and welcome enough new members to obtain your needed posts to PM.

Want to post a picture? Start a new thread or make a post, click ‘edit’, click on the ‘paper clip’ or ‘advanced’ and/or ‘manage attachments’ then ‘choose file’ then ‘upload’ and ‘submit’! If Iphone pics, you need to rename any additional pics as Iphone names its pics all the same, image.jpg.

Want to ‘like’ or thank’ someone’s comments? Use the ‘like’ button to the right or the ‘Thanks’ button, bottom right of any post you like. This saves you having to comment.

New members should be aware that the 'New Posts' link next to the 'Search' link top right of the info bar is a great way to see all of the posts you have missed since you were on the forum last. Remember to click 'mark forums read' under ‘quick links’ when you leave.

Also vote or enter our Ride of the Month competition: ROTM Submissions & Voting - Mercedes Benz SLK Forum

Thank you
 

·
Super Moderator UK SLK 55 AMG 2007
Joined
·
27,287 Posts
Welcome from Wirral, England.

We are aimed at SLK/SLC owners.
However, you are welcome to use our guides to maintain your vehicle.

Some guides on how to use forum features https://www.slkworld.com/forum-operations-help-center/536527-links-how-threads.html


Really useful links (thanks to ixions cataloguing)
https://www.slkworld.com/general-discussion/354330-links-toparts-assemblies-technical-data-locations-parts-slks.html
https://slk-links.neocities.org/ Includes diy videos.
Spare parts: https://slk-links.neocities.org/EPCLINKS.HTM

A brief guide to the forum and how to get the best from it:
https://www.slkworld.com/new-members-introduce-yourself-here/439993-new-wondering-what-do.html

There's a link to R170/171/172's do it yourself threads under the pic below.
 

·
Administrator 2009 SLK 55 AMG/Founding Member 2006
Joined
·
96,460 Posts
Welcome to SLKWorld.com: The #1 Mercedes-Benz SLK Forum from Florida!


Thank you
Jeff
Founding Member/Super Moderator
 

·
Super Moderator 2006 SLK 280
Joined
·
10,832 Posts


Welcome to SLKWorld.com from Northern
California

:burnout::Beer:

We are dedicated to the SLK, and there are other sites (such as BenzWorld and MBWorld) that will have specific sections for each class, but you're more than welcome to be a member here to
 

·
Premium Member 2009 SLK55 AMG
Joined
·
11,789 Posts
Hi Andrew, Welcome from the Sacramento Valley SLK Enthusiasts!
 
1 - 15 of 15 Posts
Top