Vestigial nipples on my PCV plate?

[marckula]

I did the pcv plate / intake manifold gasket replacement to smooth out some idle problems and 1222 (o2 lamda control) bug and while doing so I noticed on the PCV plate (rear of intake manifold) there are 2 nipples of equal size (roughly 1/8 inch diam.) - I know one is a vacuum line to the fuel pressure regulator but what's the other one for? I just plugged it up for now but it MUST be there for a reason.

[Antrieb]

Same thing happened to me, I just plugged it up with some RTV. Not sure what its for...

[632 Regal]

my original had a rubber plug on the extra port.

[Alpinewhite]

My Car has hose conected to it, see the pic. Some cars have it plugged. I have no idea what it is for. Would like to know myself.

Thanks
Arun

[Antrieb]

Yeah I don't have that extra wire running down the across the center of the engine.

[Jehu]

info (http://www.bbc.co.uk/dna/h2g2/A5934873)

[yaofeng]

This is on my 540.

http://i21.photobucket.com/albums/b274/yaofengchen/BMW_95_540/DSC_2838-1.jpg

[Alpinewhite]

My Indy says that hose supplys vacuum for secondary air pump