Teardown started
Intake off

And my guess is the new coolant bottle and new 2.0bar cap preasured system nicely.
and this pipe backed out??? Not sure if you can see, but the 1 O-Ring is clearly visible. it like it backed out 1cm or so.
bare in mind, Since the rebuild, 19000kmish i replaced the bottle and cap.
Its been 100% ok up until i replaced these 2 items. since then i needed to top up.
Thoughts??

Will order OEM pipes tomorrow from dealer.
hopefully this fixes it as i dont want to take this intake off again