warm-up/controll-pressure regulator

[Svein Frisvoll <sveinfr@stud.ntnu.no>]

Dose enybody know how the warm-up/controll-pressure regulator works?
When the engine was cold I disconected the airhose that was mounted at the
top of the wo/c-pr and the idle raised to 1700rpm. 
I tried this when the engine was warm  and it almoust died out. 
I tried to start the engine when the engine was cold with this air hoose
disconected to see if it helped my starting problem when the engine is cold
(the cold-start valve is ok), but it was still hard to start.

Is my warm-up/controll-pressure regulator broken?

Thanks!

Svein

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Svein Frisvoll
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