thueske

Hello,

This morning while I was driving a strange knocking sound appeared. My car is a late 2009 W204.
The sound appears when I push my clutch pedal (when driving) or when I push the gas pedal. When I push the gas pedal hard, the sound is harder, when I push it very smooth I don't hear the noise.
I have attached a video where you can hear the sound.
Has anybody any idea what this can be?

https://www.dropbox.com/s/5h32qk07yy...56875.mp4?dl=0

ygmn

no video - bad link

could be pressure plate or throw out bearing if happens everytime with clutch pedal

thueske

I have attached another link.

gamma300C

Check out the drive shaft universal also.....

ygmn

also check motor and tranny mounts.

See when you press in clutch you remove load from drivetrain so it can spring back to normal
When you press Accelerator it loads it up and can torque off the mounts.

Checking driveshaft is good to for same reasons...