[W126 Coupe] Is this possible?

[Dan Landiss]

Shayegan, Richard wrote:
> I had the signs of a vacuum leak (with foot on brake, at idle, in D, the economy gauge was nowhere near being pegged, rough idle), but I also had the smell of a rich fuel mixture. So I fixed the mixture (lambda was still in my winter weather setting) and the apparent vacuum leak went away. Is that possible? It just seems too easy.
>   

If you have to make adjustments for the weather, your system is 
operating open loop (no control). Find out what control element has 
failed, fix that, and all will be well.

-- 

  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  Thinking is what a great many people think they are doing when
  they are merely rearranging their prejudices.  --William James
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~