Hi I'm new to g40s just got one but it doesn't idle very well goes between 1000 and 2000 by its self
Do they have a idle control valve
Any help much appreciated
there's an aux air valve under the inlet manifold which should let more air in when it's cold. Could possibly be that sticking open. Also check your ignition timing.
vacuum leak maybe somewhere ?
Idle control screw on the throttle body too far out.
Will check all of this thanks