How would you clean out a control valve for idling stabilization?(or check?}
Just checked on Vag.com,282 Euro,s new.

(KV engine)
Sometimes mine,won,t idle from start.Intermitent fault?Idle somestimes fluctulates between 850 and 1100.
I,ll check the rest that you advised.
How much would it cost,to be checked over and set up?
Thanks,Karl.