Hi all! New Cinq need help

Hi, my name is Nelson and i'm from Portugal!
I've bought a Cinquecento Sporting and i'm proud with the choice i've maid.?

One question:
After runnig the search option and ran trhu a lot of pages, i need your help.
My Cento is with a weird problem.
If i start it the idle stabilizes at 950/975, but If i press the brake pedal the idle goes up and begin to "misfiring".

I'll try to leave a vídeo, so it be easier to urdestand.

https://youtu.be/tubTky1S5Jk

Hi and welcome

Possibly drawing air through brake servo?

Charlie

varesecrazy said:

Hi and welcome

Possibly drawing air through brake servo?

Charlie

Click to expand...

These days i've been looking for the air leak, and i think that comes from the servo area.
Wich spot exactly i can't tell