Thread: Unknown blanked fitting next to vacuum line?

Hi everyone.

Been doing some homework to replace the broken push in fitting for the vacuum line on the intake. While having a snoop i noticed this blanked off line? Can anyone identify what this is or was? I'm having a hard time finding any info on it. I must be on the completely wrong track with my search

I seem to be finding all sorts of 'interesting' repairs on this car

Thanks everyone