rattle - PeachParts Mercedes-Benz Forum

rajinder_1 · #1 01-16-2007, 02:26 PM

hi guys,
I have had this problem for a while now and cnt pin point where or what is causing it, as i drive from time to time i hear a strage rattling noise on accellaration only from around 1000 - 2000 rpm after that its ok,
it happens as i said every now and then and cant find what it can be, and thoughts?????????/

Raj

page62 · #2 01-16-2007, 03:29 PM

Mine has a rattle at one particular frequency. I'm pretty sure it's an exhaust shield...

Damian · #3 01-16-2007, 06:16 PM

I had a rattle I was chasing for a while, and it turned out to be pinging. My car was set to about 20 deg BTDC, when it should be 16 +/_ 3. It would just give a bit of a rattle upon exeleration especially in the warmer weather and when the engine was very warm. I suspect it was set with the VAC line removed, where as it should be in-tact opn my engine according to the mercedes workshop manual.

I adjusted it to the lower side of the scale (13 deg BTDC) to take into account the possibility of having to fill up with a lower octane fuel. I usually use a RON 98, but somtime you don't know what they are giving you.
All has been well since.

good luck

Damian

MattBelliveau · #4 01-16-2007, 06:19 PM

Quote:

Originally Posted by rajinder_1

hi guys,
I have had this problem for a while now and cnt pin point where or what is causing it, as i drive from time to time i hear a strage rattling noise on accellaration only from around 1000 - 2000 rpm after that its ok,
it happens as i said every now and then and cant find what it can be, and thoughts?????????/

Raj

My first thought would be to at least list you year and model so someone knows what they (we) are dealing with...