Subject: URQ freq valve trigger

[Huw Powell]

>>My new to me black #472 URQ 10V K26 is puzzling me a bit. The Frequency
>>valve will not work consistently.

> This one's easy. Your base fuel mixture as determined by the mechanical 
> parts of the CIS system (pump, regulator, control pressure valve, fuel 
> distributor, airflow plate) is either too rich or too lean to the point 
> that the "frequency valve" can no longer compensate for it.

I agree, with everything E. Roy said, but didn't want to say anything 
due to poor memory of K-jetronic.

I would say, you should air leaks before monkeying with the static 
mixture adjustment - unless you suspect someone has tried to "tune" the 
car recently and mucked it up.

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/