It is not in any true sense a cold start injector. All it is for is to
slightly change the timing of the normal injectors. It injects nothing
into the combustion chamber or intake. Called a "commencement of
injection valve" in many other documents. Used as a cold starting aid in
VW diesel engines beginning in the 90s, including TDI engines. Commonly
known as a cold start valve. Previously this function was performed by a
dash cable actuated device, then switched to this electrically
controlled device.

Mark

Mike S wrote:
> At 08:55 PM 9/26/2008, Scott Daniel  - Turbovans wrote...
>> why can I not remember where one is on an AHU then ?
>
> I don't know.
>
>> remind me please.
>
> It's not a separate nozzle, it's in the injection pump, it changes the
> injection timing. It's described here:
> http://www.myturbodiesel.com/images/pdf/N108.pdf
>
>