My Bora 4mo is having issues at the moment, the engine will fire up on first turn every morning without fail, but lately it will rev to 2k rpm instead of the usual tick over 1k that it used to do on choke.
sometimes it will idle normally then just burst up to 2k while still cold, a blip on the throttle usually sorts it out.
My thought is it may be a sticking throttle body.
any other thoughts ??