Yes, that's just as it should be.

The spring is working but the sealing cap under it may not be doing it's job as like mine they go hard over time. I removed the spring and permenantly plugged the hole with a snug fitting self tapping screw and some PTFE tape. The housing doesn't drain when you do a filter change so you just need to suck a bit out before you swop the filter. Looks like you have a leak around the throttle seal ( the green ring in the elbow) which is a common problem as the OE design is poor and many people add additional O rings infront of it to get a better seal. 2012 TDV8 Vogue (L322)