Is there anybody who know how to check the adjustment or baseadjust the throttlebody butterfly (NOT tps)

I think someone before me have adjusted a bit to much on it. I can se a lot of screwdriver marks around the screw.

 

if you mean the small throttle stop grub screw (as opposed to the idle speed adjustment screw) then on the throttle bodies I have seen the screw may as well not be fitted, as it doesn't sit against the shaft-mounted lever with the butterfly shut

 

That is the one I mean, yes... idle speed screw.

I am not sure I undertsand what you say... can I remove the screw, and hardly feel any difference??

My screw as I see it, activates the butterfly just a bit.. I think it makes a diffenrence on my idle.... and maybe my "idle" when braking with the engine from high speed (dont know what it is called in english ) It sounds like it is fueling a little bit in the exhaust, and gives little throttle it judder alot!!!

 

to clarify, do you mean screw 1 or screw 2 ?

 

Screw number 2

 

as above then :

on the throttle bodies I have seen the screw may as well not be fitted, as it doesn't sit against the shaft-mounted lever with the butterfly shut

 

Thank you Jon .... I will try to unscrew it and and again adjust the tps once again, then se what happens.