[urq] RE : suddenly lean - the saga continues

[Ingo Rautenberg]

L-A

A few things in play, actually.  It can have deposits of varnish or  
other debris, and also (more likely) is the fuel pressure regulator  
attached to the metering head goes bad -- and not available  
separately (so I've heard).

Oh, then there's those rubber pieces that can shrink.

Mine was also solved by replacing the metering head....

Ingo

On Feb 16, 2007, at 9:39 AM, Louis-Alain Richard wrote:

> Jim,
>
> Just for the sake of knowledge, how can a metering head be bad? In my
> memory, it is a purely mechanical device, so what can go wrong ? What
> is rebuildable ?
>
> Louis-Alain
>
>
> -----Message d'origine-----
>
> Keith,
>
> I had something similar with my MB a year or so ago - didn't matter
> how long I spent getting the mixture and idle speed correct, once I
> revved the engine the mixture would be all over the place when it
> settled back down to tick over. With the help of a very friendly
> tester I managed to get it through the emmissons part of the MoT (set
> it, set it, don't touch it, test it quickly) but still couldn't get it
> to idle correctly. Gave in eventually and exchanged the metering head
> for a rebuilt one - it's perfect now.
> Regards,
>
> Jim Haseltine
>
>
>
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