So just purchased another CLs6 since I wrecked my old one
I noticed it was idling rough so I figured with 94k miles it had to be the spark plugs. I replaced the plugs and the car idles a lot smoother now. Although, when I start to take off the motor shakes and runs rough. Seems like I'm not getting much power. I checked the coils and they all seem to be working. No CEL and no codes. I'm stumped...
My next idea was to clean the EGR ports and see if that helps.
Any help is much appreciated!

 

clean egr and iavc

check motor mounts for movement

 

Ok I about to clean the EGR. It's almost sounds like I have a really bad valve tick. The valves are soooo loud

 

Valve adjustment

 

Check the compression.

 

Definitely do a valve adjustment, check compression, and make sure you are getting spark.

 

Ok thank you guys. I finally have a day off work tomorrow so I'll be cleaning our my EGR ports and doing a compression test. If that doesn't work I'll checking into getting a valve adjustment done.
I'll update asap

 

any word?