hi im trying to find out what is causing a ticking rattling sound in idle. it drives fine and has had new cam dephasers, solenoids, cam belt etc, so it's not that. Ive seen this video of a corsa making a similar noise and this was caused by loose swirl flaps inside the inlet manifold. removing the vacume pipe stops the noise. My question is does my inlet manifold have swirl flaps controlled by the ECU ? If so could this cause the noise? Any help would be great.

Many thanks