Did a little research on this and found a good video on intake valve cleaning that will guide you through the process - on a Ford Focus, though. Maybe I will give this a try on my 2018 +4 (EDIT: has run 15.000km so far) and produce a video as I fiddle around the engine bay, if there is demand from this fine community.

Last edited by Robert MB; 07/02/22 01:00 PM.