Recently got this car and I love it! There’s this noise at idle though, and I’ve heard from some that it’s normal so I put it aside, but it seems like mine has gotten louder. It sounds like if you had low power steering fluid, but the power steering is good. The noise still continues while driving the car and I fear I’m hurting the engine.

 

Shoot some video if you can

 

I tried but the forum kept logging me out. Any alternative way?

 

Upload on youtube / vimeo / whatever and post the link here

 

 

oil pump
it's always gonna do it the first few seconds when you start the engine cold, but it should quiet down a bit after a few seconds.

on some cars it quiets down and goes away, on others it quiets down but is still there and never goes away. There's no rhyme or reason to it, as far as I know.

 

Get a louder exhaust

 

The W211 E55 is quite noisy. My W211 E55 is much noisier than my normally aspirated W210 E55 which has fewer pulleys...
It takes awhile to "learn" the "normal" sounds of the supercharged engine. But... when you do hear a difference, inspect immediately. I discovered a bad supercharger idler pulley bearing and a supercharger clutch pulley bearing on separate occasions because the racket it made was louder and "grindier" than usual.

 

Example of a bad supercharger pulley bearing. Second photo is new on top and old below.

 

Damn thats really bad haha

 

Nothing some J-B Weld can't fix. Not the Quick Set but the regular J-B that takes a few hours to set this way it will stick real good !!