On 8/23/07, Marshall Booth <[EMAIL PROTECTED]> wrote:
> Over rich ALDA causes smoke. There is NO such thing as turbo lag in a
> Mercedes diesel. The turbo provides some boost much above idle. What
> most people refer to as turbo lag is the improper adjustment of the ALDA
> that provides insufficient fuel until the engine reaches 2200-2500 rpm.
> The way to optimize the ALDA for power is to increase until there is
> more than a tad of smoke at full load with the engine running at 4000+
> rpm (like pedal to the floor in drive when you have hit about 65-70+
> mph) and the turn the ALDA back until only slight wisps of smoke are
> barely visible in the rear view mirror (under the same conditions) on a
> bright sunny day. What happens at night in trailing headlights measures
> NOTHING so don't worry about that!
>
> Most serious (more than 3-4 mpg) increases in fuel use results from
> leaks! Could be any of the soft fuel lines or the return lines that
> connect the injectors. A fuel filter that is clogged will
> (paradoxically) result in increased fuel consumption as well.
>

Hmm... If anything my ALDA is still under-adjusted then, since if
anything I'm seeing less smoke in the daytime.   Instead, I will check
for leaks and change the fuel filters---it's been a while on those.
Thanks!

Alex Chamberlain
'87 300D Turbo et al.

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