Help! Vacuum hose 3.9 V8

HI,
Just had osme work done and had a hot running problem ever since!
I think that the issue is with the fuel pressure reg at the back of the block close to the bulkhead? There is a vacuum hose coming of the regulator but it's hanging free! I can't see where this goes and it's not obvious on Rave either.

Can anyone tell me where this is supposed to go to??
Thanks!
S

I will have a quick look.

Thanks!!

Goes onto small vacumn pipe at rear of plenum under air bypass valve......small (maybe 5-6 mm) pipe sticking out, check for perished ends and refit.

Nick

Fantatstic - thanks for your help!
Might get to get muddy today afterall!