I have a suspected air leak.

I have checked all the clamps on FMIC pipe work and are all tight so I have narrowed it down to the BOV. I have been advised to blank it off and go for a drive to see if it is still leaking.

My question is.... what do i do with the vacuum hose that runs from intake manifold to the bov? leave it off or blank it?

cheers

 

blank it off

 

cheers